Question

resolver: (x+1) (x-4)+2x = x(x+3)

Answer 1

Explicación paso a paso:

(x+1) (x-4)+2x = x(x+3)

${x}^{2} - 4x + x - 4 + 2x = {x}^{2} + 3x \\ {x}^{2} - x - 4 = {x}^{2} + 3x \\ {x}^{2} - {x}^{2} - 4 = 3x + x \\ - 4 = 4x \\ - 1 = x$