x - 2 over 2 - x = (x - 2)/(2 - x) = -(2 - x)/(2 - x) = -1.
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It is: 4x -34x^2 -21 simplified
x2 × 2x = 2x3
Separate and simplify the common terms. 5x^2 - X^2 = 4x^2 -7x - 2x = -9x Now put these terms back together 4x^2 - 9x Or if simplified further, you get: x(4x-9)
x2 + 2x - 3 = (x + 3)(x - 1)
x2-2x-15 = (x+3)(x-5) when factored