Question

solve it guys by ising identity only NO SPAM ​

Answer 1

Your Question

ii) $(\frac{2}{3} x-\frac{3}{2x} -1)^2$ only identity

Solving

It will be easier if we take $t=\frac{2}{3} x$ first.

Now,

$(t-\frac{1}{t} -1)^2$

Expand with the identity,

$(t)^2+(-\frac{1}{t} )^2+(-1)^2+2(-\frac{t}{t} +\frac{1}{t} -t)$

(expand the brackets)

$t^2-\frac{1}{t^2} +1-2+\frac{2}{t} -2t$

(put in the value of t)

$\frac{4}{9} x^2+\frac{9}{4x^2}+\frac{4}{3} x+\frac{3}{x} -1$

(in descending order)

$\frac{4}{9} x^2+\frac{4}{3} x-1+\frac{3}{x}+\frac{9}{4x^2}$

Answer 2

Answer:

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