MATH
posted by laura .
combine like terms
is this correct
(5x^2+6x+8)+(6x^3 +2x^24x)
= 6x^3+7x^2+2x+8

MATH 
bobpursley
correct.

MATH 
laura
please help
execute the indicated multiplications.
(x2)(x^2+2x+4)
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