Answer: 95
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Work Shown:
First we compute 3 △ 2
a △ b = a^2 + ab - b^2
3 △ 2 = 3^2 + 3*2 - 2^2 ... replace 'a' with 3, replace b with 2
3 △ 2 = 9 + 6 - 4
3 △ 2 = 15 - 4
3 △ 2 = 11
Replace the ( 3 △ 2 ) in the original expression with 11.
We now want to find 11 △ 13
a △ b = a^2 + ab - b^2
11 △ 13 = 11^2 + 11*13 - 13^2
11 △ 13 = 121 + 143 - 169
11 △ 13 = 264 - 169
11 △ 13 = 95
