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Earn +20 ptsQ: What is x squared equals 9 squared - 2x squared?
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Is -2x squared plus 2x plus 1 equals 9 a quadratic equation?
Yes it is. The thing that makes it a quadratic equation is that "x squared" in there.
How do you factor x squared -2x-3 equals 0?
x squared -2x-3 equals 0 is the same as (x + 1)(x - 3) = 0
What is the answer to 2x squared -2x -40 equals 0 is it x equals 5 and x equals -4?
Yes it is and well done.
How do you solve 2X plus 5 squared equals 7?
2x + 52 = 7 2x + 25 = 7 2x = 7 - 25 2x = -18 x = -18/2 x = -9
10x squared - 17 x equals 63?
(2x - 7)(5x + 9) ie x = 3.5 or -1.8
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