Question

3x(x-4)-(x+1)(x-8)=2x^+5

Answer 1

$3x^2-12x-(x^2-8x+x-8)=2x^2+5$
$x^2-12x-(x^2-7x-8)=5$
$x^2-12x-x^2+7x+8=5$
$19x=5-8$
$x=-frac{3}{19}$

Answer 2

ошибся

Answer 3

будет -5x = 5 - 8

Answer 4

x = 3/5

Answer 5

x=0.6