Question

9xsquared + 12x = -4

Answer 1

x = - 0.67

Explanation:

Step 1:

Solve for x using quadratic formula for the equation 9x² + 12x + 4 =0

Here, a = 9, b = 12 and c = 4

⇒ x = (- b ±√b² - 4ac)/2a

⇒ x = (-12 ±√144 - 4×9×4)/18

⇒ x = (-12 ±0)/18 = -12/18 = -2/3

⇒ x = - 0.67