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Mathematics 19 Online
OpenStudy (anonymous):

Expand (x + 5)^3. a. by multiplying (x+5)(x+5)(x+5). b. by finding the volume of an appropriate cube and by finding the volume of the eight boxes that make up the cube.

OpenStudy (anonymous):

x+5 x+5 ______ x^2+5x 5x+25 ____________ x^2+10x+25 x+5 ______________ x^3+10x^2+25x 5x^2+50x+125 _______________________ x^3+15x^2+75x+125

OpenStudy (anonymous):

how did you get that?

OpenStudy (anonymous):

multiply the given by itself 3 times,and you will get the answer

OpenStudy (anonymous):

Thanks

OpenStudy (anonymous):

Ah finally got it!! THanks!

OpenStudy (anonymous):

Do you know what B would be?

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