4(a.a+b.b)-12(a.a-b.b)+9(a.a-b.b)

its  for 9th standard science group question ex#6.3. iwant the solution of 2 question.as  q.1 mention above and  2nd is (x.x+1/x.1/x)-4(x-1/x)
in order of operations by

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1 Answer

"a.a" ????????????? iz zat spozed tu be a*a ?????????????
by

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