Question

преобразовать выражение в многочлен стандартного вида (x-5)^2, (x-3)(x+3),(4a+7b)^2,(5x-y)(y+5x)

Answer 1

$(x-5)^2=x^2-10x+25\\\\ (x-3)(x+3)=x^2-9\\\\(4a+7b)^2=16a^2+56ab+49b^2\\\\(5x-y)(y+5x) =(5x-y)(5x-y) =25x^2-y^2$

Answer 2

(x-5)²=x²-10x+25

(x-3)(x+3)=x²-9

(4a+7b)²=16a²+56ab+b²

(5x-y)(y+5x)=(5x-y)(5x+y)=25x²-y²