2x2 + 24x + 72 = 0 options: {-6} {-6,0} {-9,-6, 0} {-9,-4}

x = - 6

Step-by-step explanation:

Solve for x over the real numbers:

2 x^2 + 24 x + 72 = 0

Divide both sides by 2:

x^2 + 12 x + 36 = 0

Write the left hand side as a square:

(x + 6) ^2 = 0

Take the square root of both sides:

x + 6 = 0

Subtract 6 from both sides:

Answer: x = - 6