Question

Use the zero property to find the solutions to the equation X2 + X- 30 = 12

Answer 1

X=6, X=-7

Explanation:

X^2+X-30=12

X^2+X-30-12=12-12-Subtract 12 from both sides

a=1 b=1 c=-30 - then place into the quadratic formula and you will get the answers.

Answer 2

Answer: 6 or-7

Explanation:

X2+x-30=12

Collect like terms

X2+x-30-12=0

X2+x-42=0

Factorise

Factors of -42 that will give +x is +7&-6

Substitute

X2+7x-6x-42=0

X(x+7)-6(x+7)=0

(X-6)(x+7)=0

X-6=0

X=6 or

X+7=0

X= -7

Therefore x=6 or -7