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Earn +20 ptsQ: How do you answer x2 plus x equals 12?
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Multiply x plus 3 x plus 4 equals?
(x+3)(x+4)=x2+7x+12
X2 plus 6x-72 equals 0?
(x + 12)(x - 6) = 0 x = 6 or -12
X2 plus 4x - 9 equals 5x plus 3?
x2 + 4x - 9 = 5x + 3 ∴ x2 - x - 12 = 0 ∴ (x + 3)(x - 4) = 0 ∴ x ∈ {-3, 4}
X²-7x plus 12 equals 0?
x2-7x+12 = 0 (x-3)(x-4) = 0x=3,4
What are solutions for x2 plus 10x plus 1 equals -12 plus 2x?
x2+10x+1 = -12+2x x2+8x+13 = 0 The solution: x = -4 + the square root of 3 or x = -4 - the square root of 3
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