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Mathematics 21 Online
OpenStudy (anonymous):

Is this correct ? Simplify: (3a + 5b)^2 9a^2 + 10ab + 25b^2

OpenStudy (anonymous):

I think it's 30ab

OpenStudy (anonymous):

how did you get that ?

OpenStudy (anonymous):

9a^2 + 15ab + 15ab + 25b^2

OpenStudy (anonymous):

3 times 5 = 15

OpenStudy (anonymous):

ok thank you

OpenStudy (anonymous):

No problem :)

OpenStudy (anonymous):

I came up with 9a^2 + 30ab + 25b^2

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