B) (tanx + 2)(tanx - 3) - (6 - tanx) + 2 tanx
I believe you first need to open up the parentheses, so:
(tanx)^2 - 3tanx + 2tanx -6
combine all the like terms, and you should get:
(tanx)^2 + 2tanx - 12
Hello, mortyr!
The first two are just "algebra": multiplying, cancelling, and combining.
We have: .
Multiply top and bottom by
and we have: .
Reduce: .
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Here's another approach . . .
. . guarenteed to impress/surprise/terrify your teacher.
Multiply top and bottom of the fraction by
. .
Since , we have: .
Then we have: .
Since , we have: .
And we have: .