Question

What are the solutions of x2 + 8x − 20 = 0?

Please show your work

Answer 1

x^2+8x-20=0
+20 +20
x^2+8x=20

x^2=1

soo...

1x+8x=9x

9x=20

now u divide

20/9

Answer 2

factorise the quadratic

find the factors of -20 that add to 8 10 and -2

(x +10)(x - 2) = 0

to solve you need to solve the equations

x + 10 = 0

x-2 = 0

so the solutions to the equation are x = -10 or 2