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n order to write an expression like (5x + 4)3 in expanded form, it helps to look at (5x + 4) as just one number, n.



n3= n • n • n



So, (5x + 4)3 = _____



Enter the expression(s) that correctly fill in the blank.

Verified Answer :

MissPhiladelphia

The expression (5x + 4)^3 in expanded form is 125 x3 + 300
x2 + 240 x + 64.  The expression will
have also a root of x = -4/5. This is the form of trinomial expansion and can
be  solve by multiplying the the term 3
times.

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