Question

solve the equation 9x² + 6x = 4​

Answer 1

Answer:

$9x {}^{2} + 5x = 4 \\ 9x {}^{2} + 5x - 4 = 0 \\ 9x {}^{2} + 9x - 4x - 4 = 0 \\ 9x(x + 1) - 4(x + 1) = 0 \\( x + 1)(9x - 4) = 0 \\ x = - 1 \: \: and \: \: x = 4 \div 9$