First question:

From the book... whomever wrote this doesn't know HOW to explain things.

Solve:

From the second two terms, pull out a ‘-1’. You can double check that this is correct by distributing the “-1” back in.

Inside the parenthesis on the far right, rearrange terms.

Answer:Now, in the second group of terms, we have a “-1” times a “-1” which gives a “+1”.

Can someone explain how the answer is obtained better? I'm fumbling on factoring with -1 on these types of equations.

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Second question:

Solve:

Answer:

If you apply the order of distribution it comes out to

Why can't the answer be

or

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Anyone have a better explanation? I'm starting to cram for a COMPASS test this coming Friday and still need to refresh my math skills from algebra, adv. algebra, geo, and trig.