Question

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Answer 1

90

Explanation:

90(97−98)2

=90*(−1)2

=90*((−1)*(−1))

=90

90(97−98)2

=90(−1)2

=(90)(1)

=90

Answer 2

Explanation:

90(n-98)²=90(97-98)²=90(-1)²=90*1=90

n=97