x2+10x−24=0
Let's observe that the given equation:
x2+10x−24=0is a quadratic equation that can be solved using quick factoring:
x2+10x−24=0⟷{?⋅?=−24?+?=10↓(x+12)(x−2)=0and therefore we get two simpler equations from which we can extract the solution:
(x+12)(x−2)=0↓x+12=0→x=−12x−2=0→x=2x=−12,2Therefore, the correct answer is answer B.
x=2,x=−12