Question

2×(-3×-5)-6×-4(×+3)=-3(×-4)-8(×-1)-7​

Answer 1

Respuesta:

$x=-\frac{3}{4}-i\frac{\sqrt{519}}{12}$

Explicación paso a paso:

$2x\left(-3x-5\right)-6x-4\left(x+3\right)=-3\left(x-4\right)-8\left(x-1\right)-7\\\\-6x^2-20x-12=-11x+13\\\\-6x^2-20x-12-13=-11x+13-13\\\\-6x^2-20x-25=-11x\\\\-6x^2-20x-25+11x=-11x+11x\\\\-6x^2-9x-25=0\\\\x_{1,\:2}=\frac{-\left(-9\right)\pm \sqrt{\left(-9\right)^2-4\left(-6\right)\left(-25\right)}}{2\left(-6\right)}$

$x_{1,\:2}=\frac{-\left(-9\right)\pm \sqrt{519}i}{2\left(-6\right)}\\\\x_1=\frac{-\left(-9\right)+\sqrt{519}i}{2\left(-6\right)}\\\\x=-\frac{3}{4}-i\frac{\sqrt{519}}{12}$