(12x^3-4x^2+8x)/(-2x) The greatest common factor of the numerator and denominator is -2x so upon division by GCF of both numerator and denominator you have:
-6x^2+2x-4 and we can now also factor out -2
-2(3x^2-x+2)
To answer the calculation 1/2 + 3/4, you need to do the following:
1/2 + 3/4 =
2/4 + 3/4 =
(2 + 3) / 4 =
5/4 This can be also written as

.
Answer: y=1/4 x - 7
Found the equation using slope-intercept form
She would be able to make 12 piles 12x4=48 50-48=2 2 tiles left over