find the GCF ( greatest common factor ) of the terms
4x^5 = 4 x x x x x
8x^4 = 4*2 x x x x
8x^3 = 4*2 x x x
So, the common factor is
4 x^3
The expression:
4x^5+8x^4+8x^3
4x^3 (x^2 + 2x + 2 )
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