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Mathematics 10 Online
OpenStudy (anonymous):

l

OpenStudy (lena772):

do you still need help?

OpenStudy (anonymous):

Yes I do! Thanks. @Lena772

OpenStudy (campbell_st):

well the area is \[A = \frac{3a + 9}{2a - 6} \times \frac{4a+4}{a + 3}\] next step needs to be factoring the fractions \[\frac{3(x + 3) \times 2(x + 2)}{2(x -3)\times(x + 3)}\] now remove the common factors... whats left is the answer... the restriction will be the value of a that makes the denominator zero

OpenStudy (campbell_st):

oops sorry fro changing from a to x... the simplified form should have a rather than x

OpenStudy (anonymous):

So would it be x +2/x + 3?

OpenStudy (campbell_st):

well not quite as (a +3) is a common factor... so the common factors are 2 and (a + 3) which leaves \[A = \frac{3(a + 2)}{(a - 3)}\] to find the restriction solve a - 3 = 0

OpenStudy (anonymous):

and a must equal 3 since 3 - 3 = 0. Alrighty..makes since now. Thanks!

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