How do you multiply #(x^3+2x^2)(7x+4)#?

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Answer 1 · 2018-04-20T21:22:07

#7x^4+18x^3+8x^2#

Multiply each term:

#x^3 xx 7x=7x^4#

#x^3 xx 4=4x^3#

#2x^2 xx 7x=14x^3#

#2x^2 xx 4=8x^2#

Collect like terms:

#7x^4+4x^3+14x^3+8x^2 -> 7x^4+18x^3+8x^2#

This is our final answers as it cannot be simplified further