Question

use the identity (x+a) (x+b = x2 + (ab) x +ab to find the following
1) 501×502​

Answer 1

Answer:

Step-by-step explanation:

hey mate

here is your answer

using identity:

(x+a)(x+b)=x²+(a+b)x+ab

a)-501*502

=(500+1)(500+2)

=(500)²+(1+2)500+1*2

=250000+1500+2

=251502(answer)

using the identity:

(x-a)(x+b)=x²+(-a+b)x-ab)

b)-95*103

=(100-5)*(100+3)

=(100)²+(-5+3)*100+(-5*3)

=10000-200-15

=10000-215

=9785(answer)

hope it helps

:)

Answer 2

Answer:

The Answer is 251502

Step-by-step explanation:

Find the steps in the photo attached.

Hope it helps !