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Mathematics 7 Online
OpenStudy (anonymous):

5b^4-3125

OpenStudy (anonymous):

what about it

OpenStudy (anonymous):

it needs to be factored...

OpenStudy (anonymous):

factor out a 5 first to make your life easier

OpenStudy (anonymous):

5 (-5 + b) (5 + b) (25 + b^2)

OpenStudy (anonymous):

given\[5b^4-3125\]factor out 5\[5(b^4-625)\]diference of squares\[=5(b^2-25)(b^2+25)\]diff of squares again\[=5(b-5)(b+5)(b^2+25)\]

OpenStudy (anonymous):

@mandolino nice explanation !!!

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