If x+y=10 and xy=21 find the value of 3x+5
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Answer: I think the correct question is
X+y=10 and xy=21 find the value of ( x square+y square)
Step-by-step explanation:
x²+y²=(x+y)²-2xy
=(10)²-2*21
=100-42
=58
Answered by
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Answer:
the value is 58 maths k mmmm
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