Question

find the product
-a 2b 2c 2(a + b - c)

Answer 1

 i think it' =-8abc(a+b-c)

Answer 2

The result of the product is a + 4b

The expression is given as:

• $-a +2b + 2c +2(a + b - c)$

Open the brackets

$-a +2b + 2c +2(a + b - c) = -a +2b + 2c +2a + 2b - 2c$

Collect like terms

$-a +2b + 2c +2(a + b - c) = -a +2a+2b + 2b + 2c - 2c$

Evaluate the like terms

$-a +2b + 2c +2(a + b - c) = a+4b$

Hence, the result of the product is a + 4b

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