Question

35. Evaluate the following products without multiplying directly
a) 108 X 92
b) 65 X 66
​

Answer 1

Step-by-step explanation:

a) 9936

b) 4290

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Answer 2

Answer:

a. 108×92

= (100+8)(100-8)=100^2-8^2=10000-64=9936.

b. 65×66

=(60+5)(60+6)=60^2+60(5+6)+5×6=3600+660+30=4290.