# Thread: Math help wanted :)

1. Originally Posted by el123
$100-5t-10^2+\frac{2t}{4}^2-5t-\frac{t^2}{4}$
You've expanded $-2(5-\frac{t}{4})^2$ incorrectly.

You're going to need to get this algebra thing licked, mate

$x(a+b)^2=x(a+b)(a+b)$

$=x(a^2+ab+ab+b^2)$

$=x(a^2+2ab+b^2)$

$=xa^2+2xab+xb^2$

Notice that the equation you're interested is in the form $x(a-b)^2=x(a-b)(a-b)$, so you should get $xa^2-2xab+xb^2$ as a solution.

2. I hate algebra, confuses the heck out of me!

This is driving me nuts , i still can't get it right.
Thanks anyway.

3. Originally Posted by el123
I hate algebra, confuses the heck out of me!

This is driving me nuts , i still can't get it right.
Thanks anyway.
Algebra can be confusing, I agree. But with practice, it gets easier.

If you're finding the algebra component of these questions hard, I suggest stopping whatever else you're doing and spending 2 hours watching some of the pre-algebra and algebra videos here: Khan Academy. Improving your algebra skills just a bit will pay off in a big way going forward.

Cheers,

Gary

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