Using (h+a)(h+b)=h²+(a+b)h+ab,find 9.8*9.7
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Step-by-step explanation:
(9+0.8)(9+0.7)
=9^2+(0.8+0.7)9+0.8×0.7
= 81+1.5×9+0.56
=81+13.5+0.56
=95.06 is the answer.
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