a^2+1/a^2+2-5a-5/a factorise
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a²+(1/a)²+2-5a-(5/a)
= (a)²+(1/a)²+2×a×(1/a) - 5a -(5/a)
=(a+(1/a))²-5(a+(1/a)) [ here the formula ( a+b)² is used and 5 is taken comman]
= ( a+(1/a) ( a+( 1/a)-5) [ here ( a+(1/a)) is taken comman)
I HOPE YOU UNDERSTAND
= (a)²+(1/a)²+2×a×(1/a) - 5a -(5/a)
=(a+(1/a))²-5(a+(1/a)) [ here the formula ( a+b)² is used and 5 is taken comman]
= ( a+(1/a) ( a+( 1/a)-5) [ here ( a+(1/a)) is taken comman)
I HOPE YOU UNDERSTAND
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