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If (x-y)=4 and xy= 12, the …

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If (x-y)=4 and xy= 12, the value of x×x + y×y is

Posted by Riya Singh 5 years, 7 months ago

CBSE > Class 09 > Mathematics

2 answers

Harshit Srivastav 5 years, 7 months ago

Answer is 28

0Thank You

Harshit Srivastav 5 years, 7 months ago

Solution:- x-y=4 Squaring on both sides, (X×X)-(Y×Y)=4 {Use the formula of a square minus b square} x×x+y×y-2×X×Y=4 x×x+y×y-2×XY=4 ( now value of xy=12 so,) x×x+y×y-2×12=4 x×x+y×y-24=4 ( now bring -24 into RHS side so it will become positive 24) x×x+y×y=4+24 x×x+y×y=28

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Posted by Yash Pandey 6 months ago

CBSE > Class 09 > Mathematics

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3√2×4√2×12√32

Posted by Manas Khurana 6 months, 2 weeks ago

CBSE > Class 09 > Mathematics

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Posted by Sheikh Alfaz 1 month, 2 weeks ago

CBSE > Class 09 > Mathematics