Question

What are the solutions of the quadratic equation?
4x^2 – 9x - 9=0

Answer 1

Answer:

$x=-0.75,3$

Step-by-step explanation:

We can use the quadratic formula to solve for $x$:

Given equation: $4x^2-9x-9=0$

$x=\frac{-b\pm\sqrt{b^2-4ac} }{2a}$ (using quadratic formula, $ax^2+bx+c = 0$)

$x=\frac{9\pm\sqrt{(-9)^2-4(4)(-9)} }{2(4)}$ (substitute numbers in)

$x=\frac{9\pm\sqrt{225} }{8}$

$x=-0.75,3$

Hope this helps :)