Question

(x + 5)(x - 2) - 3(4x - 3) = (5-x)²​

Answer 1

ΗΘΙΑ

procedimiento :

$(x + 5)(x - 2) - 3(4x - 3) = (5-x)^{2}$

$x^{2} -9x-1=25-10x+x^{2}$

$x^{2} -9x-1+1=25-10x+x^{2} +1$

$x^{2} -9x=x^{2} -10x+26$

$x^{2} -9x-(x^{2} -10x)=x^{2} -10x+26-(x^{2} -10x)$

$x=26$

salu2!!