2006-11-20 22:53:09 · 5 answers · asked by Titanic lover 2 in Science & Mathematics ➔ Mathematics
"opening the brackets" has no meaning in math. You
want to multiply the 2 factors. Assuming by the "*"
after the x's and y's you mean they're exponents you
should use "^". Now we have
-2x^4 - 4x^2y^2 - 2y^4 which could be expressed as
-2(x^4 +2x^2y^2 + y^4)
2006-11-21 00:06:37 · answer #1 · answered by albert 5 · 0⤊ 0⤋
(x² + y²)(- 2x² - 2y²)
No.
The aragement of the two expressions implies multiplication.
- - - - - - - - - - - -
(x² + Y²) - (-2x² - 2y²)
This arrangement of the two expressions has a negative between the parenthesis. When ever a negative precides a parenthesis all signs change. + to - and - to + once the parenthesis is removed.
- - - - - s-
2006-11-21 07:17:22 · answer #2 · answered by SAMUEL D 7 · 0⤊ 0⤋
Your question is actually incorrect. I suppose you wanted to ask "will the COEFFICIENT OF y BE +VE or -VE?"??
2006-11-21 07:13:17 · answer #3 · answered by Flashy V 2 · 0⤊ 0⤋
yes, y will be -ve.
here is the solved sum.
(x*2+y*2)(-2x*2-2y*2)
= (2x+2y)(-4x-4y)
= -8x sq. -8xy -8xy-8y sq.
= -8 x sq -16 xy -8 y sq.
2006-11-21 07:08:27 · answer #4 · answered by aki 2 · 0⤊ 0⤋
go and ask to your maths teacher.
2006-11-21 07:06:07 · answer #5 · answered by deepak. 2 · 0⤊ 0⤋