Mathematics: Use the Quadratic Formula to find the exact solutions of x2 + 7x - 4 = 0. -b X=- Vb2 - 4ac 2a

no its not a functionStep-by-step explanation:...

Use the Quadratic Formula to find the exact solutions

carltonwashington23

23.01.2022

The solution of equation x^2+7x-4=0 is 0.53,-7.53.

Step-by-step explanation:

Given : Quadratic equation x^2+7x-4=0

To find : The solution of equation ?

Solution :

The solution of the quadratic equation ax^2+bx+c=0 is $x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}$

Here, a=1, b=7 and c=-4.

Substitute the values,

$x=\frac{-7\pm\sqrt{7^2-4(1)(-4)}}{2(1)}$

$x=\frac{-7\pm\sqrt{65}}{2}$

$x=\frac{-7+\sqrt{65}}{2},\frac{-7-\sqrt{65}}{2}$

x=0.53,-7.53

Therefore, the solution of equation x^2+7x-4=0 is 0.53,-7.53.

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