Question

using (x+a)(x+b)=x^2+(a+b)x+ab find 995×1004​

Answer 1

Step-by-step explanation:

Given Question:- 995×1004

To find using an identity.

995×1004

(1000-5)x(1000+4)

Using (x+a)(x+b)=x²+(a+b)x+ab

Where,

a= -5

b= 4

x= 1000

(1000-5)x(1000+4)

(1000)²+(-5+4)1000+(-5x4)

1000000+(-1)1000-20

1000000-1000-20

998980

Answer:- 998980

• Therefore, The required answer is 998980