Grade 9Algebra
a-1/a = 3 find a^2 + 1/a^2give me solution for the above
a-1/a = 3
find a^2 + 1/a^2
give me solution for the above
1 Answer
Anshika Pattnaik
a-1/a=3 (given)(a-1/a)^square = 3^square (squaring both sides.)a^square +(1/a)^square - 2(a*1/a) = 9[(a-b)^square = a^square + b^square - 2a*b]a^square + (1/a) ^square -2 = 9a^square + (1/a) ^square = 9+2 = 11
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