Author Michellewilliam in Mathematics, 04.14.2019

HELP!!!! Grow and simplify r⁴-16/r⁴-81·r²+9/r²+4 simplified product is ______

Answered by secretlyblu

ok the best way to look at this is by factoring out so look at "r^4-16" if you factor out you get (r²-4)(r²+4) and the same with "r^4-81" if you factor out you get (r²-9)(r²+9) so now your problem looks something like this. now cancel out like terms remember   because b/b=1so now your left with

Answered by Gulhaider

Well, even this expression given by 'secretlyblu' can be factorized:

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