Show all work in dividing 9 x squared minus 1 all over 8 x minus 4 divided by the fraction 3 x squared plus 5 x minus 2 all over 2 x squared plus x minus 1.

Question

Show all work in dividing  9 x squared minus 1 all over 8 x minus 4 divided by the fraction 3 x squared plus 5 x minus 2 all over 2 x squared plus x minus 1.

anonymous · Answer

factorise denominator of top half using the difference of 2 squares method

anonymous · Answer

then factorise the denominator of bottom half using quadratics

anonymous · Answer

I remember you have to keep change flip with this so now it becomes $$9x^2-1\over 8x-4  $$ * $$2x^2+1-1 \over 3x^2+5x-2$$

anonymous · Answer

but they would be across from each other

anonymous · Answer

so if they r across from each other doesnt that mean u can multiply them??

anonymous · Answer

I thought you had to factor them first?

anonymous · Answer

hmm i dont see a way to factor the 2x squared +1 -1....

anonymous · Answer

try multiplying them out first nd see what u get

anonymous · Answer

ok, so far i have...$$(3x+1)(3x-1) \over (4x+2)(2-2)$$ and $$(2x -)(x-) \over (3x-)(x(+)$$

anonymous · Answer

r they across from each other??

anonymous · Answer

yes

anonymous · Answer

I think we r going to need help with this one

anonymous · Answer

@nincompoop fire away lol

anonymous · Answer

3 heads r better than 1 :)