Question

Please do this one sum with explanation and step by step

Answer 1

Answer:

Mistake is that the square of first term.

First term should be (3x)² = 9

So, (3x + 2)² = 9x² + 6x + 4

Answer 2

Answer:

$9x {}^{2} + 12x + 4 = 3x {}^{2} + 6x + 4 \\ 6x {}^{2} + 6x = 0 \\ 6x(x + 1) = 0 \\ x = 0...x = - 1$