Question

evaluate using identities 508-492
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Answer 1

Question:

I THINK THIS Question Is as

evaluate 508 × 492

Answer:

508 × 492  = 249936

Step-by-step explanation:

=> we can rewrite this as:-

508 = (500 + 8) ;

and

492 = (500 -8);

we have,

a² - b²  =  (a+b) (a-b) ;

we compare this with our question,

then we have  (500 + 8) (500 -8) in from of=>> (a+b) (a-b)

here

a = 500,

b = 8,

(500 + 8) (500 -8)   = a² - b²

                                = (500)² - (8)²

                                = 250000 - 64  -----------(5² × 100² = 25 × 10000)

                                =  249936

508 × 492  = 249936