Question

x+y=8 xy=15find x sqare and y square

Answer 1

Hii
Nice question

Question:-

x + y = 8
xy = 15

Answer :-

Using formula

${(x + y)}^{2} = {x}^{2} + {y}^{2} + 2xy \\ \\ putting \: values \\ \\ {(8)}^{2} = {x}^{2} + {y}^{2} + 2 \times 15 \\ \\ 64 = {x}^{2} + {y}^{2} + 30 \\ \\ {x}^{2} + {y}^{2} = 64 - 30 = 34$


Hope this helps you.

Answer 2

HEY MATE HERE IS YOUR ANSWER

We know the formula
${(x + y)}^{2} = {x}^{2} + {y}^{2} + 2xy \\ x + y = 8 \\ xy = 15 \\ {x}^{2} + {y}^{2} = {(x + y)}^{2} - 2xy \\ {x}^{2} + {y}^{2} = {8}^{2} - 2(15) \\ {x}^{2} + {y}^{2} = 64 - 30 \\ {x}^{2} + {y}^{2} = 34$
HOPE IT HELPS YOU


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