This can not be solved as there is no equivalent value given.
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25x2 - 10xy + y2 = (5x - y)2
(y+2)(y+3)
4a2 + 4ab - y2 + b2 You cannot simplify this expression because it does not contain like terms, but you can factor it such as: 4a2 + 4ab - y2 + b2 = (4a2 + 4ab + b2) - y2 = (2a + b)2 - y2 = [(2a + b) - y][(2a + b) + y]
4x2 - 4xy + y2 = (2x - y)2 so the length of the side of the square must be 2x-y.
The solution to the equation 2x plus 2 is 2(x + 1).