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4  4 tan X + tan ^ 2 X



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manishsatywali
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its of form y^24y+4
here y = tanx

manishsatywali
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y^22y2y+4
y(y2)2(y2)
nw it is (y2)(y2)
that is
(y2)^2

manishsatywali
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y = tanx

manishsatywali
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put y = tan x

manishsatywali
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did u got that if yes then click the best response????????