how does that become 8y^2. how does the digit 8 come there. pls explain the problem fast. chapter: Indices
(Exponents)
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2^x has been replaced by y .( see in described answer of your book) .
Now 2^2x means 2^x^2 . ( laws of exponents ) .
2^x = y .
put this value above .
It makes 2^3×y^2 or 8y^2 .
Step-by-step explanation:
Follow laws of exponents.
THANK YOU
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