10. If x - y = 6 and xy = 8, find the value of x2 + y2.
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Answer:
answer is 28. At first you have to multiply 6×2 as x - 6. And then 8× 2 as y - 8. after that you have to add it.
Step-by-step explanation:
x2 + y2
or, 6 × 2 + 8 × 2
or, 12 + 16
or, 28.
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