(x^2+3y)(x^2-2y)?

Question

(3a – 2)(a – 1) ?
a) 3a2 + a – 2

b) 3a2 – 5a + 2

c) 3a2 – 6a – 2

d) 3a2 + 6a + 2



54a^4b^3
-------------- division line
81a^3b^2

a)2/9ab
b)2/3ab
c) 2a
-------- division line
3b
d)6/7ac



8x^3y-4x^2y^3-12xy
----------------------------- division line
4x^2y^2

Answer 1

1.
(x^2+3y)(x^2-2y)
x^4 - 2x^2 y + 3x^2 - 3y^2
x^4 + x^2 y - 3y^2
~~~~~~~~~~~~~~~~~~
2.the answer is (b)
because

(3a – 2)(a – 1)
3a^2 - 3a -2a +2
3a^2 - 5a +2
~~~~~~~~~~~~~~~~~~~~
3. the answer for this is (b) but it's not correctly written. it ought to be "(2/3)ab" or "2ab/3"
~~~~~~~~~~~~~~~~~~~~
4.
8x^3y-4x^2y^3-12xy
_______________ (div. line)
4x^2y^2


8x^3y-4x^2y^3-12xy = 4xy(2x^2 -xy^2 - 3)
so
4xy(2x^2 -xy^2 - 3) divided by 4x^2y^2 equals


2x^2 - xy^2 -3
____________ (div. line)
xy

Answer 2

(3a-2)(a-1)= 3a^2 - 5a + 2

2/3ab

i can't work out the last one

Answer 3

1) (x^2+3y)(x^2-2y)
x^4 -2x^2y+3x^2y-6y^2
x^6+x^y-6y^2

2) (3a-2)(a-1)
3a^2-3a-2a+2
3a^2-5a+2 B

3) 54a^4b^3 2ab
------------------ = ------- OR 2ab/3 (b)
81a^3b^2 3


4) 8x^3y-4x^2y^3-12xy 4xy( 2x^2-xy^2-3)
----------------------------- = --------------------------
4x^2y2 4x^2y^2


2x^2-xy^2-3
-------------------
xy

Answer 4

wow...compicalted...i have nooooo idea, why don't you do it yourself instead of trying to get answers from others...

Answer 5

b
c

2x-y-3
---------
xy^2