Question

(x + 4)2 = 2x(5x – 1) - 7(x - 2)

Answer 1

Respuesta:

FORMULA CUADRATICA

Explicación paso a paso:

2x$2x+8=10^{2} -2x-7x+14\\2x+8=10x^{2} +9x-14\\2x+8-10x^{2} +9x-14=0\\11x-6-10x^{2} =0\\-10x^{2} +11x-6=0\\10x^{2} -11x+6=0\\\\x=\frac{-(-11)+-\sqrt{(-11)-4.10.6} }{2 . 10} \\x=\frac{11+-\sqrt{121-240} }{20} \\x=\frac{11-+\sqrt{-119} }{20}$