Given the quadratic power of a + AB = 10, the quadratic power of B - AB = 7, find the quadratic power of a + 2ab-b | Math enthusiast | Mathematical art

Given the quadratic power of a + AB = 10, the quadratic power of B - AB = 7, find the quadratic power of a + 2ab-b

The second power of a + AB = 10, the second power of B - AB = 7
The second power of a + the second power of 2ab-b
=a²+ab+ab-b²
=a²+ab-（b²-ab）
=10-7
=3

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