а) (5+х)^{2} = 25 + 10x + x^{2б) (1-3х)^{2} = 1 - 6x + 9x^{2в)(3а-10b)^{2} = 9а^{2} - 60ab + 100b^{2г)(х^{2}+4)^{2} = x^{4} + 8x^{2} + 1д)(у+15)^{2} = у^{2} + 30у + 22е)(5х-0,2)^{2} = 25х^{2} - 2х + 0.0ё)(-2а+7b)^{2} = 4а^{2} - 28ab + 49b^{2ж)(а^{3}+b^{4})^{2} = а^{6} + 2а^{3}b^{4} + b^{8}
а) (5+х)^{2} = 25 + 10x + x^{2
б) (1-3х)^{2} = 1 - 6x + 9x^{2
в)(3а-10b)^{2} = 9а^{2} - 60ab + 100b^{2
г)(х^{2}+4)^{2} = x^{4} + 8x^{2} + 1
д)(у+15)^{2} = у^{2} + 30у + 22
е)(5х-0,2)^{2} = 25х^{2} - 2х + 0.0
ё)(-2а+7b)^{2} = 4а^{2} - 28ab + 49b^{2
ж)(а^{3}+b^{4})^{2} = а^{6} + 2а^{3}b^{4} + b^{8}