Simplify the expression - 4x2 (3x - 7).

A.

-12x^3 + 28

B.

-12x^3 + 28x^2

C.

-12x^3 - 28

D.

-12x^3 - 28x^2

to start to solve the system of equations below, which number would you multiply in the equation - 2x-5y=-1? The two equations are - 2x-5y=-1 and 4x+2y=8

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