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Question
If xy =2 and
x
y
2
=
8
,
w
h
a
t
i
s
t
h
e
v
a
l
u
e
o
f
x
?
4
2
1/2
8
ANSWER : 3
Descrption
<pre> Given, xy = 2<math xmlns = "http://www.w3.org/1998/Math/MathML"><mo>⇒</mo><msup><mi>x</mi><mn>2</mn></msup><msup><mi>y</mi><mn>2</mn></msup><mo> = </mo><mn>4</mn><mo> </mo><mspace linebreak = "newline"/><mi>a</mi><mi>n</mi><mi>d</mi><mo> </mo><mi>x</mi><msup><mi>y</mi><mn>2</mn></msup><mo> = </mo><mn>8</mn><mo>.</mo><mo>.</mo><mo>.</mo><mo> </mo><mo>(</mo><mi>i</mi><mi>i</mi><mo>)</mo><mo> </mo><mspace linebreak = "newline"/><mo>(</mo><mi>i</mi><mo>)</mo><mo> </mo><mo>÷</mo><mo>(</mo><mi>i</mi><mi>i</mi><mo>)</mo><mo> </mo><mo>⇒</mo><mfrac><mrow><msup><mi>x</mi><mn>2</mn></msup><msup><mi>y</mi><mn>2</mn></msup></mrow><mrow><mi>x</mi><msup><mi>y</mi><mn>2</mn></msup></mrow></mfrac><mo> = </mo><mfrac><mn>4</mn><mn>8</mn></mfrac><mspace linebreak = "newline"/><mo>⇒</mo><mi>x</mi><mo> = </mo><mfrac><mn>1</mn><mn>2</mn></mfrac></math> </pre>
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