Question

Solve using the quadratic formula

Answer 1

x = - 16, x = 9

Explanation:

`x=\frac{-b±\sqrt{b^(2) -4ac} }{2a}`

Ignore the "A" ^

v² + 7v - 144 = 0

a = 1, b = 7, c = - 144

`x=\frac{-7±\sqrt{7^(2) -4(1)(-144)} }{2(1)}`

`x=(-7±√(49 +576) )/(2)`

`x=(-7±√(625) )/(2)`

`x=(-7+25)/(2)` and
`x=(-7-25)/(2)`

`x=(18)/(2)` and
`x=(-32)/(2)`

x = 9 and x = - 16

Answer 2

The answers are -16 and 9. Hopefully this helps :D