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ACT Math 3.5 Elementary Algebra 243 Views
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Description:
ACT Math: Elementary Algebra Drill 3.5. Simplify the expression.
ACT Math: Elementary Algebra Drill 3.5. Simplify the expression.
Transcript
- 00:03
Here's your shmoop du jour:
- 00:05
Simplify: a cubed times b to the fourth over a squared times b squared.
- 00:09
And here are the potential answers...
- 00:14
OK. It's about division of exponents: do we realize we can subtract?
- 00:19
So with a cubed over a squared, we can subtract 3 minus 2 and the a in the denominator just
Full Transcript
- 00:24
goes away.
- 00:26
So we just have a in the numerator.
- 00:28
Now let's deal with b.
- 00:29
b to the 4th can subtract b squared and we have b squared remaining in the numerator.
- 00:36
So the whole problem simplifies to a times b squared.
- 00:39
Answer: A.
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We don't like knocking people down to size, but we do like simplifying radicals. Join us?
If fleeing criminals always fled the scene of the crime at perfect right angles, it would be much easier to determine their whereabouts. Fortunatel...