Question

Me ajudem a resolver: (2x+3) elevado a 2 - 9= 12x

Answer 1

${(2x + 3)}^{2} - 9 = 12x \\ \\ {x}^{2} + 9 - 9 = 12x \\ \\ {x }^{2} - 12x = 0 \\ d = 144 \\ \\x = \frac{ - b + - \sqrt{d} }{2a} \\ x = \frac{12 + - 12}{2} \\ x1 = 12 \\ x2 = 0$
Espero ter ajudado