Algebra. Rational Exponents

Algebra
Tutor: None Selected Time limit: 1 Day

Apr 21st, 2015


Ar%5E2+%2B+Ar%5E3+=+36 and
Ar%5E4+%2B+Ar%5E5+=+144

These can be factored to
Ar%5E2+%28r%2B1%29+=+36 and
Ar%5E4+%28r%2B1%29+=144
Therefore,
r%2B1+=+36%2F%28Ar%5E2%29 and
r%2B1+=+144%28Ar%5E4%29

Setting these equal to each other and cross multiplying gives
144Ar%5E2+=+36Ar%5E4, or

4Ar%5E2=Ar%5E4

Apr 21st, 2015

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