Question

plz give answer urgent​

Answer 1

GIVEN:

${x}^{2} + {y}^{2} = 6$

SOLUTION:

${x}^{2} + {y}^{2} = 6 \\ {(x + y)}^{2} - 2xy = 6 \\ putting \: the \: value \: of \: xy = 2 \\ {(x + y)}^{2} = 6 + 2 \times 2 \\ {(x + y)}^{2} = 10$

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Answer 2

Step-by-step explanation:

${x}^{2} + {y}^{2} = 6.$

$xy = 2.$

Then,

${(x + y)}^{2} = {x}^{2} + {y}^{2} + 2xy.$

${(x + y)}^{2} = 6 + 2(2).$

${(x + y)}^{2} = 6 + 4.$

${(x + y)}^{2} = 10.$

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