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## anonymous 4 years ago simplify to the lowest terms 16a^2/4a+11b-121b^2/4a+11b

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1. anonymous

$\frac{ 16a^2 }{ 4a + 11 } - \frac{ 121b^2 }{ 4a + 11b }$ i'm guessing you meant that?

2. anonymous

yes

3. anonymous

find an LCD which in this case is?

4. anonymous

i don't know...nothing goes into 121

5. anonymous

the LCD is least common denominator, so the left fraction's denominator is the same as the right 4a + 11b is the LCD

6. anonymous

ok

7. anonymous

so how do I find the lowest term ?

8. anonymous

is the answer 105/4a+11b ?

9. anonymous

since the right side's denominator is already 4a + 11b we have to multiply the left sides to look like that as well we're missing a B so we multiply the numerator and denominator by B/B so it now looks like $\frac{ 16a^2b }{ 4a + 11b } - \frac{ 121b^2 }{ 4a + 11b }$

10. anonymous

$\frac{ 16a^2 - 121b^2 }{ 4a + 11b }$

11. anonymous

ok

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