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Earn +20 ptsQ: 12x plus 4y-20 equals 4
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9x plus 2 equals 12x plus 14?
9x + 2 = 12x + 14 -3x = 12 x = -4
12x-8 equals 10x plus 4?
12x - 8 = 10x + 42x = 12x = 6
What is the answer to 8x-3 plus 6x-1 equals 12x plus 6?
8x-3+6x-1 = 12x+614x-4 = 12x+614x-12x = 6+42x = 10x = 5
X2 plus 12x-64 equals 0?
x2 + 12x - 64 = 0 ∴ (x + 16)(x - 4) = 0 ∴ x ∈ {4, -16}
What is the discriminent of 9x2 plus 12x equals 2?
It is: 122-4*(9*-2) = 216
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