| easy | medium | hard |
|---|---|---|
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What is x^2 - 49
(x-7)(x+7)
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What is x^2 + 3x - 6
x - 2 = 2
x = 2, 1
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What is 5x^2 + 22x - 48
(x+6)(5x-8)
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What is 4x^2 - 28 - 21
(x-7x)(4x+3)
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What is 2x^2 - x - 15 / x - 3 * x^2 - 1 / x - 1
2x^2+7x+5
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