can anyone teach this step by step by july 21 at 11 am pst??

really lost

New member
im still confused the exact question is really long and im trying to break it down but heres the whole question...........its tricky........but so is all math for me...... :x

perform the indicated operation and answer in lowest terms......

5a-5b-a^2+b^2/4a^2-4ab+b^2 x 4a^2-b^2/2a^2-1ab-b^2

Denis

Senior Member
Re: can anyone teach this step by step by july 21 at 11 am p

really lost said:
im still confused the exact question is really long and im trying to break it down but heres the whole question...........its tricky........but so is all math for me...... :x
perform the indicated operation and answer in lowest terms......

5a-5b-a^2+b^2/4a^2-4ab+b^2 x 4a^2-b^2/2a^2-1ab-b^2
Let's go term by term:
5a - 5b - a^2 + b^2
= 5(a - b) - (a^2 - b^2)
= 5(a - b) - (a - b)(a + b)
= (a-b)(5 - (a + b))
= (a - b)(5 - a - b) [1]

4a^2 - 4ab + b^2
= (2a - b)(2a - b) [2]

4a^2 - b^2
= (2a + b)(2a - b) [3]

2a^2 - 1ab - b^2
= (2a + b)(a - b) [4]

Now write 'em down:
[1] / [2] times [3] / [4]

You'll see you can cancel out (a - b), (2a - b) and (2a + b).

That leaves:
(5 - a - b) / (2a - b) : hope TK agrees

If you can't follow that, too bad so sad: I don't have a blackboard here!

really lost

New member
thak you thank you thankyou

thankyou