Assuming you mean x squared plus 5x squared... the answer is 6x squared.
-x2+2x
if its x(squared) its 7x(cubed) if its 2xX its 14x(squared)
X2 (X squared)
[ x3 - 4x2 + 7x ] / (x) = x2 - 4x + 7
Your expression is this... x2 + y2/x
x2 + 8x2 = 9x2
(12x2 + 18) / (3x2 + 6) = (4x2 + 6) / (x2 + 2)
x2 + x2 = 2x2 2x^2
Assuming you mean x squared plus 5x squared... the answer is 6x squared.
x^3 - 121x
x3+3x2+3x+2 divided by x+2 equals x2+x+1
2x2 + x2 = 3x2
(x2 + 14 + 48 / (x + 8) = (x2 + 62) / (x + 8) =(x2 + 8x - 8x - 64 + 126) / (x + 8) = x - 1 + 126/(x+8)
-x2+2x
3x4 plus 5x3 plus x2 - 5 divided by x 2 =[(3x4) + (5x3) + (x2 - 5)]/x2 =(12 + 15 + x2 -5)/x2 =(27 - 5 + x2)/x2 =(22 + x2)/x2
x2/(-x) = -x.