If x+y=10 and x-y=4, find the value of x power 2 and y power2
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Answer:
x²+y²=58
x²=49 and y²=9
Step-by-step explanation:
given,
x+y=10
=>x= 10-y
and,
x-y= 4
x=4+y
so,
10-y=4+y
2y=6
y=3
now in x+y=10
x=10-3
x=7
therefore x²= 7²=49
y²= 3²=9
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