Question

evaluate the following products without multiplying directly 104 ×107​

Answer 1

Answer:

104 × 107

(100 + 4)(100 + 7)

${100}^{2} + 100(4 \times 7) + (4 \times 7)$

10000 + 2800 + 28

=> 12828

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Answer 2

Answer:

(i) 104×107

=(100+4)(100+7)

=(100)

2

+(4+7)(100)+(4)(7)

=10000+1000+28= 11128