2² +63 Simplify a? -b? a + b a-b 3²...
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2² +63 Simplify a? -b? a + b a-b 3²-b? a? +62 a-b a+b

JEE/Engineering Exams
Maths
Solution
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( frac{a^{2}+b^{2}}{a^{2}-b^{2}}-frac{a^{2}-b^{2}}{a^{2}+b^{2}} ) ( frac{a+b}{a-b}-frac{a-b}{a+b} ) simple tax ( Rightarrow quad frac{left(a^{2}+b^{2}right)^{2}-left(a^{2}-b^{2}right)^{2}}{left(a^{2}-b^{2}right)left(a^{2}+b^{2}right)} ) ( frac{(a+b)^{2}-(a-b)}{(a-b)(a+b)} ) ( vec{z} ) ase identity - ( (a-b)(a+b)=a^{2}-b^{2} ) ( Rightarrow frac{left(left(a^{2}+b^{2}right)+left(a^{2}-b^{2}right)right)left(left(a^{2}+bright)^{2}-left(a^{2}-b^{2}right)right.}{left(a^{2}-b^{2}right)left(a^{2}+b^{2}right)} ) ( frac{(a+b+a-b)(a+b-(a-b)}{left(a^{2}-b^{2}right)} ) ( frac{x a^{2} cdot 2 b^{2}}{left(a^{2}-b^{2}right)left(a^{2}+b^{2}right)} times frac{left(a^{2}-b^{2}right)}{2 a cdot x b} ) ( Rightarrow quad frac{a b}{a^{2}+b^{2}} cdot A u dot{u} )
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