Simplify: 3x^3 (x+5y)?

2009-03-30 3:55 pm

solve, show the steps

回答 (5)

2009-03-30 4:19 pm

✔ 最佳答案

3x^3(x + 5y)
= 3x^3*x + 3x^3*5y
= 3x^4 + 15x^3y

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2009-03-30 4:15 pm

3x^4 + 15x^3y
All you have to do is multiply the variable out front by both parts of the inside

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2009-03-30 4:09 pm

in these steps
1st : 3x^3 (x) = 3x^3+1 = 3x^4
2nd: 3x^3(5y) = 3(5) and x^3(y) = 15x^3y
combine
3x^4+15x^3y

參考: 7th math

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2009-03-30 4:07 pm

3x^3(x+5y)=3x^ 3x+ 15y = x=1/15y perhaps???

參考: haven't done algebra in 20 years. haven't needed to...

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2009-03-30 3:58 pm

=3x^4+15x^3y

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