Question

Find the sum and difference of the following expressions a-b and b-a

Answer 1

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Explanation:

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Answer 2

9514 1404 393

Answer:

• sum: 0
• difference: 2a -2b

Explanation:

Sum

(a -b) +(b -a) = a - a + b - b = 0

Difference

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