Question

(2-x)^2-x(x+1,5)

Answer 1

=4-4x+x^2-x^2-1.5x=4-5.5x

Answer 2

(y-4)^2

Answer 3

(7x+a)^2

Answer 4

решите и это плиз

Answer 5

y^2-8y+16, 49x^2+14xa+a^2