Question

16. 3 to the power (2x + 5) + 9 = 90 find x​

Answer 1

Answer:

$ans \: \: - 3$

Mark me the brainliest

Step-by-step explanation:

$( {2x + 5})^{3} + 9 = 90 \\ = 8x + 125 + 9 = 90 \\ = 8x = 90 - 125 - 9 \\ = 8 x = - 24 \\ x = \frac{ - 24}{8} or - 3$