Algebra 2 factoring. #9) b^4-81 #5) m^4-1 #10) 81^4-16

asked Jul 24, 2017 149k views

5 votes

Algebra 2 factoring. #9) b^4-81
#5) m^4-1
#10) 81^4-16

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4 votes

#9) b^4 - 81 = (b^2)^2 - 9^2 = (b^2+ 9)(b^2- 9)
#5) m^4-1 = (m^2)^2 - 1 = (m^2 + 1)(m^2- 1)
#10) 81x^4-16 = (9x^2)^2 - 4^2
= (9x^2 +4)(9x^2 - 4)