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January 30, 2015

January 30, 2015

Posted by **jovahnna** on Sunday, June 30, 2013 at 3:44pm.

- pre cal -
**Tony**, Sunday, June 30, 2013 at 3:59pmx^2(4x^2+1)^7(76x^2+3)

- pre cal -
**jovahnna**, Sunday, June 30, 2013 at 4:01pmhow did you solve this??? I am so los.

- pre cal -
**Steve**, Sunday, June 30, 2013 at 5:29pm3x^2(4x2 + 1)^8 + 64x^4(4x2 + 1)^7

Notice that x^2 is a factor of each term, and so is a power of (4x^2+1)

So, factoring them out, we have

x^2 (4x^2+1)^7 (3(4x^2+1)+64x^2)

3(4x^2+1)+64x^2 = 12x^2+3+64x^2 = 76x^2+3

and that's Tony's answer

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