for what values of x is x² + 2x = 24 true?\n-6 and -4\n-4 and 6\n4 and -6\n6 and 4

Explanation:

Step1: Rearrange to quadratic form

$x^{2}+2x - 24=0$

Step2: Factor the quadratic

$(x + 6)(x - 4)=0$

Step3: Solve for x

$x+6 = 0$ gives $x=-6$; $x - 4=0$ gives $x = 4$

Answer:

C. 4 and -6