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Simplify quantity 4 x squared plus 12 x minus 16 all over quantity 2x plus 10 over quantity 6 x plus 24 over quantity x squared plus 9x plus 20

User Positron
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2 Answers

5 votes
the answer is: (x-1)(x+4)/3
hope this helped! (:
User KaliMa
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4 votes


(4x^2+12x-16)/((2x+10)/((6x+24)/(x^2+9x+20)))

Here we have two fractions top and bottom


(4x^2+12x-16)/(2x+10) divide by
(6x+24)/(x^2+9x+20)

We have division in between . we reverse the second fraction and multiply it with first fraction.


(4x^2+12x-16)/(2x+10) *
(x^2+9x+20)/(6x+24)

Now we factor both numerator and denominator

4x^2+12x-16 = 4 (x+4)(x-1)

2x+10 = 2(x+5)

x^2+9x+20 = (x+5)(x+4)

6x+24 = 6(x+4)

Replace the factors,


(4 (x+4)(x-1))/(2(x+5)) *
((x+5)(x+4))/(6(x+4))

We cancel out same factors at the top and bottom

So it becomes ,
((x-1)(x+4))/(3)


User Trobol
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6.7k points