Question

Complete the equivalent equation for –7x – 60 = x2 + 10x.

*)(x + ) = 0
What are the solutions of -7x-60 = x2 + 10x?
(x +
XED

Answer 1

x = -5

x = -12

Explanation:

- 7x - 60 = x^2 + 10x

add 7x to both sides

x^2 + 17x = -60

add 60 to both sides

x^2 + 17x + 60 = 0

factorise quadratic

(x + 12) (x + 5) = 0

x = -12

x = -12x = -5