Respuesta :
–2x + 14 = x^2 – 3x + 12
add 2x to both sides:
14 = x^2-x +12
subtract 12 from both sides:
2 = x^2-x
subtract 2 from both sides:
x^2 -x -2 = 0
now factor the polynomial:
(x-2) (x+1) = 0
solve for x
2-2 = 0
-1 +1 = 0
so x = 2 and -1
add 2x to both sides:
14 = x^2-x +12
subtract 12 from both sides:
2 = x^2-x
subtract 2 from both sides:
x^2 -x -2 = 0
now factor the polynomial:
(x-2) (x+1) = 0
solve for x
2-2 = 0
-1 +1 = 0
so x = 2 and -1