Question

Consider this quadratic equation. x2 3 = 4x which expression correctly sets up the quadratic formula to solve the equation?

Answer 1

The expression which correctly sets up the quadratic formula to solve the equation is (A) $\frac{-(-4)+-\sqrt[]{-4^{2}-4(1)(3) } }{2(1)}$.

What is an expression?

• In mathematics, an expression is a combination of numbers, variables, and functions (such as addition, subtraction, multiplication or division, etc.)
• Expressions are similar to phrases.
• A phrase in language may comprise an action on its own, but it does not constitute a complete sentence.

To find which expression correctly sets up the quadratic formula to solve the equation:

Theory of quadratic equation - A quadratic equation is defined as any equation containing one term in which the unknown is squared and no term in which it is raised to a higher power.

An example of a quadratic equation in x is $-4x^{2} +4=9x$.

How to solve any quadratic equation using the Sridharacharya formula?

Let us represent a general quadratic equation in x, $ax^{2} +bx+c=0$ where a, b and c are coefficients of the terms.

According to the Sridharacharya formula, the value of x or the roots of the quadratic equation is -

$x=\frac{-b+-\sqrt{(b)^{2}-4(a)(c) } }{2a}$

The given equation is $x^{2} -4x+3=0$

Comparing with the general equation of quadratic equation, we get a = 1, b = -4 , c = 3.

Putting the values of coefficients in the Sridharacharya formula,

$\frac{-(-4)+-\sqrt[]{-4^{2}-4(1)(3) } }{2(1)}$  which is (A).

Therefore, the expression which correctly sets up the quadratic formula to solve the equation is (A) $\frac{-(-4)+-\sqrt[]{-4^{2}-4(1)(3) } }{2(1)}$.

Know more about expressions here:

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The complete question is shown below:

Consider this quadratic equation. x^2+3=4x. Which expression correctly sets up the quadratic formula to solve the equation?