if y+1/2y=4then find y²+1/4y²
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Answer:
y+1/2y=4
3/2y=4
y=4×(2/3)
y=8/3
y^2+1/4y^2
(8/3)^2+1/4(8/3)^2
=64/9+64/36
=(2304+576)/324
=2880/324
=8.88
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