Choose the correct simplification of the expression of 7x2(6x + 3x2 - 4).
2 answers:
Parenthesis first
=7*2(6x+6-4)
=7*2(12x-4)
=7*2*8x
solve
=14*8x
=112x
-28 x^2 + 42 x^3 + 21 x^4 is your Answer
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