Question

evaluate 102×104 by suitable identity​

Answer 1

I hope it will help you

Answer 2

10,608.

Step-by-step explanation:

$let \: us \: use \: the \: identity \: (x + a) \: (x + b) \: where$

$x = 100. \ \: a = 2. \\ b = 4.$

$(x + a) \: ( x+ b) = {x}^{2} \: + \: (a + b)x \: + \: ab.$

$= ({100})^{2} + \: (2 + 4) (100)+ (2)(4).$

$= 10000 \: + (6) (100) + (8).$

$= 10000 + 600 + 8$

$= 10608.$

Hope it helps you...