Thanks, I'm working on math homework and for some reason my brain can't figure this out....I've been working on it for some time.
2007-09-17 18:32:37 · 7 answers · asked by cosmicgirl 2 in Science & Mathematics ➔ Mathematics
(x + y) (x + y) (x + y)
( x + y ) ( x ² + 2 x y + y ² )
x ³ + 2 x ² y + x y ² + x ² y + 2 x y ² + y ³
x ³ + 3 x ² y + 3 x y ² + y ³
2007-09-20 07:12:32 · answer #1 · answered by Como 7 · 1⤊ 0⤋
x^3 + 3x^2y + 3xy^2 + y^3. Memorize it.
2007-09-17 18:37:03 · answer #2 · answered by Bob R. 6 · 0⤊ 0⤋
(x+y)^3 = x^3 + 3x^2y + 3xy^2 + y^3
2007-09-17 18:40:43 · answer #3 · answered by tootoot 3 · 0⤊ 0⤋
1) (x+y)(x+y)(x+y)
2) (x^2 + 2xy + y^2)(x+y)
3) x^3 + 2yx^2 + xy^2 + yx^2 + 2xy^2 + y^3
4) x^3 + 3yx^2 + 3xy^2 + y^3 <-------answer
2007-09-17 18:43:40 · answer #4 · answered by Nep 6 · 0⤊ 0⤋
this is just (x+y)(x+y)(x+y)
the answer is x^3+3x^2y+3xy^2+y^3
2007-09-17 18:36:43 · answer #5 · answered by criselda 3 · 0⤊ 0⤋
(x+y)(x+y)(x+y)= (x^2+2xy+y^2)(x+y)=X^3+x^2y+2x^2y+2xy^2+y^3
=x^3+3x^2y+2xy^2+y^3
2007-09-17 18:40:45 · answer #6 · answered by Anonymous · 0⤊ 0⤋
xxx +3xxy + 3xyy + yyy
2007-09-17 18:38:03 · answer #7 · answered by Anonymous · 0⤊ 0⤋