(2a+b)^2 = 4a^2 + 4ab + b^2
(3x-4)^2 = 9x^2 - 24x + 16
49 - b = 7^2 - b = 49 - b
(√8-b)^2 = 8 - 2√8b + b^2
(2√x+a)^2 = 4x + 4√x*a + a^2
(4x+13)^2 = 16x^2 + 104x + 169
(2a+b)^2 = 4a^2 + 4ab + b^2
(3x-4)^2 = 9x^2 - 24x + 16
49 - b = 7^2 - b = 49 - b
(√8-b)^2 = 8 - 2√8b + b^2
(2√x+a)^2 = 4x + 4√x*a + a^2
(4x+13)^2 = 16x^2 + 104x + 169