Question

Como resuelvo la ecuación 3x(x+2)+x=30-2x

Answer 1

Explicación paso a paso:

$3x(x + 2) + x = 30 - 2x \\ 3 {x}^{2} + 6x + x + 2x - 30 = 0 \\ 3 {x}^{2} + 9x - 30 = 0 \\ x = \frac{ - 9 \sqrt{81 + 360} }{6} \\ x = - 9 + o - 21 \div 6 \\ x1 = - 9 + 21 \div 6 = 2 \\ x2 = - 9 - 21 \div 6 = - 5 \\ \\ x1 = 2 \\ x2 = - 5 \\ salu2$