Question

Plzz solve this ques.... Itzz urgent.... (:-plzz) - :

Answer 1

answer ia here............

Answer 2

Your Answers :-
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We have ,

$(x + y) = \frac{7}{2}$

$xy = \frac{5}{2}$
then,
Using Identity ,
${(a + b)}^{2} = {a}^{2} + {b}^{2} + 2ab$
$( { \frac{7}{2} })^{2} = {x}^{2} + {y}^{2} + 2 \times \frac{5}{2}$

${x}^{2} + {y}^{2} = \frac{49}{4} - 5$
${x}^{2} + {y}^{2} = \frac{29}{4}$
then using other identity of negation square,
${(x - y)}^{2} = \frac{29}{4} - 5$
${(x - y)}^{2} = \frac{29 - 20}{4}$
${(x - y)}^{2} = \frac{9}{4}$
$(x - y) = \frac{3}{2}$
Using
$( {x}^{2} - {y}^{2} ) = (x + y)( x - y)$
$( {x}^{2} - {y}^{2} ) = ( \frac{7}{2})( \frac{3}{2} )$
$( {x}^{2} - {y}^{2} ) = \frac{21}{4}$
Hence you got ur answers.

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Ankit✌✌✌✌