Question

9.7 into 9.8 solve using
dentity

Answer 1

9.7×9.8

(9+0.7) (9+0.8)

using (x+a) (x+b) = x²+(a+b)x+ab

(9)² + (0.7+0.8)9 + 0.7×0.8

=81+13.5+0.56

=95.06

hope it helps you

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