You can
put this solution on YOUR website!
(2x³-5x²+6x-11)+(6x³+4x²-6x+12)-(5x³+3x²-9x+25)
Write the first two polynomials one under the other
with like terms one under the other. Then
combine term by term:
2x³-5x²+6x-11
6x³+4x²-6x+12
8x³-1x²+0x+ 1
and then under that bottom line:
8x³-1x²+0x+ 1
Write the third polynomial:
8x³-1x²+0x+ 1
-(5x³+3x²-9x+25)
But to subtract we must change every sign inside
the parentheses. Then we combine them:
8x³-1x²+0x+ 1
-5x³-3x²+9x-25
3x³-4x²+9x-24
Edwin
