Question

Evaluate "103 X 107" without multiplying directly.​

Answer 1

103×107

(105-2)×(105+2)

(a+b)(a-b)=a²-b²

105²-2²

=11025-4

=11021

Hope this helped

Answer 2

Answer:

103×107

=(100+3)(100+7)

equation:(x+a)(x+b)=x^2+(a+b)x+an

x=100, a=3, b=7

103×107=(100+3)(100+7)

=100^2+3+7×100+3×7

=10000+1000+21

=11021