Question

упростите вырожение ×-4-(×+1)(×-4)

Answer 1

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