5x+9 from x^2+3x
please show work
thanks
2006-11-30 13:43:45 · 3 answers · asked by goof ball 2 in Science & Mathematics ➔ Mathematics
Since you wanna subtract polynomials, this is the form of the question:
(x^2 + 3x) - (5x + 9)
Distribute the minus sign to get
x^2 + 3x - 5x - 9
Combine like terms
x^2 - 2x - 9
2006-11-30 13:47:09 · answer #1 · answered by Puggy 7 · 1⤊ 0⤋
x^2+3x -(5x+9)= x^2 - 2x -9
x^2 - 0 = x^2
3x - 5x= - 2x
0- 9 = -9
You subtract like terms, subtract all the x squared terms, then the x terms, and then the numbers.
2006-11-30 21:47:35 · answer #2 · answered by colgatetotalgel 2 · 0⤊ 0⤋
line them up first...
x^2+3x
- (5x+9)
x^2-2x-9
i think that's it. it's been forever since i've done that though, so i may be wrong.
2006-11-30 21:46:02 · answer #3 · answered by Anonymous · 0⤊ 0⤋