Question

найдите сумму и разницу многочлна

Answer 1

1)
$4 x^{2}-7x+3-(x^2-8x+11)=4 x^{2}-7x+3-x^2+8x-11=$ $3x^2+x-8$

2)
$4 x^{2}-7x+3+(x^2-8x+11)=4 x^{2}-7x+3+x^2-8x+11=$$=5x^2-15x+14$