# What is √ b2 4ac?

## What is √ b2 4ac?

The Quadratic Formula The quantity b2u22124ac is called the discriminant of the polynomial. If b2u22124ac x26lt; 0 the equation has no real number solutions, but it does have complex solutions. If b2u22124ac 0 the equation has a repeated real number root. If b2u22124ac x26gt; 0 the equation has two distinct real number roots.

Discriminant

## What is sqrt b2-4ac called?

We can use the formula under the radical, b2u22124ac, called the discriminant, to determine the number of roots of solutions in a quadratic equation.

## What is b2-4ac?

For the quadratic equation ax2 + bx + c 0, the expression b2 4ac is called the discriminant. The value of the discriminant shows how many roots f(x) has: – If b2 4ac x26gt; 0 then the quadratic function has two distinct real roots. – If b2 4ac 0 then the quadratic function has one repeated real root.

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## What does b2-4ac mean?

For the quadratic equation ax2 + bx + c 0, the expression b2 4ac is called the discriminant. The value of the discriminant shows how many roots f(x) has: – If b2 4ac x26gt; 0 then the quadratic function has two distinct real roots. – If b2 4ac 0 then the quadratic function has one repeated real root.

## Why is B 2 4ac called the discriminant?

It is called the Discriminant, because it can discriminate between the possible types of answer: when b2 u2212 4ac is positive, we get two Real solutions. when it is zero we get just ONE real solution (both answers are the same) when it is negative we get a pair of Complex solutions.

## What is a quadratic equation also called?

A quadratic equation is also called a second- degree equation. SOLVING QUADRATIC. EQUATIONS. u2022 By factoring and using the Zerou2010Product Property u2022 By taking square roots u2022 By completing the square u2022 By using the Quadratic Formula Quadratic equations can be solved by several methods.

Discriminant

The discriminant

## Why is b2-4ac is called discriminant?

Because the quadratic equation involves only one unknown, it is called univariate. The quadratic equation contains only powers of x that are non-negative integers, and therefore it is a polynomial equation. In particular, it is a second-degree polynomial equation, since the greatest power is two.

Discriminant

## What does B 2 4ac tell you?

The discriminant is the part of the quadratic formula underneath the square root symbol: bxb2-4ac. The discriminant tells us whether there are two solutions, one solution, or no solutions

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## What is the discriminant b2 4ac used for?

We can use the formula under the radical, b2u22124ac, called the discriminant, to determine the number of roots of solutions in a quadratic equation. There are three cases: b2u22124acx26lt;0: The equation has 0 real solutions.

## What does a discriminant of tell you?

The discriminant tells you how many solutions there are to quadratic equation or how many x intercepts there are for a parabola. It tells you the number of solutions to a quadratic equation. If the discriminant is greater than zero, there are two solutions.

## Why is it called the discriminant?

The argument (that is, the contents) of the square root, being the expression b2 4ac, is called the discriminant because, by using its value, you can discriminate between (that is, be able to tell the difference between) the various solution types.

## Is B 2 4ac a discriminant?

The discriminant is the expression b2 – 4ac, which is defined for any quadratic equation ax2 + bx + c 0. Based upon the sign of the expression, you can determine how many real number solutions the quadratic equation has.

## What is discriminant?

discriminant, in mathematics, a parameter of an object or system calculated as an aid to its classification or solution. In the case of a quadratic equation ax2 + bx + c 0, the discriminant is b2 u2212 4ac; for a cubic equation x3 + ax2 + bx + c 0, the discriminant is a2b2 + 18abc u2212 4b3 u2212 4a3c u2212 27c2.

## Who started the discriminant?

mathematician James Joseph Sylvester