is a quadratic equation for y, in terms of x.
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-2
x2 + 3x + 7 = 5 ∴ x2 + 3x + 2 = 0 ∴ (x + 1)(x + 2) = 0 ∴ x ∈ {-2, -1}
-3/2
3x-1 = 11 3x = 11+1 3x = 12 x = 4 Therefore: x2+2 = 18
x3+3x2+3x+2 divided by x+2 equals x2+x+1