Question

$2({a}^{2} + 1 \div {a}^{2} ) - (a - 1 \div a) - 7$


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Answer 1

Answer:

ANSWER

The rule is : a+b=a

2

+b:a−b=a

2

−b;a×b=a

2

×b

∴8÷4=8

2

÷4=64÷4=16

please vote for me.