Question

(x - 1)² + 3x = x +26

Answer 1

$(x-1)^{2} + 3x = x + 26$
$x^{2} - 1^{2} + 3x = x +26$
$x^{2} +1+3x-x-26=0$
$x^{2} +2x-25=0$

$b^{2} - 4ac$
$2^{2} -4.1.(-25)$
$4-4.(-25)$
$4+100$
$104$