Question

If a2 - 2ab + b2 = 36 and a2 - 3ab + b2 = 22 find ab
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Answer 1

Step-by-step explanation:

The difference of your 2 problem is ab = 14

a^2 - 2ab + b^2 =36

a^2 -3ab + b^2 =22

__________________________ subtract vertically ( the difference)

+ab = 14

this is a simultaneous equation

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