Question

URGENTE

x²+2 x²+1 x+7
------- - ------ = 1 - --------
3 4 12

Answer 1

(x^2 + 2)/3 - (x^2 + 1)/4 = 1 - (x + 7)/12
(4(x^2+2) -3(x^2 + 1))/12=(12 - (x + 7))/12
4x^2 + 8 - 3x^2 - 3 = 12 - x - 7
X^2 + 5 = 5 - x
X^2 + x = 5 - 5
X(x + 2) = 0
X + 2 = 0
X = -2