2 years ago

2abc-3ab A=2 b=-3 c=4

1 answer:

8 0

2(2)(-3)(4) - 3(2)(-3)

4(-3)(4) - 6(-3)

-12(4) - (-18)

-48 + 18

-30

Whenever there are two minus signs next to each other, your answer should become a positive. If there is one minus sign and one addition sign, it will stay a negative sign. If there are two addition signs, the addition sign will stay the same.
(-) (-) = +
(-) (+) = -
(+) (-) = -
(+) (+) = +

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