Question

using:(X+a)(X+b) - X(2)+(a+b)X+ab find: 103*98​

Answer 1

Step-by-step explanation:

(x+a)(x+b)=x^2+(a+b)x+ab

=103*98=(100+3)(100-2)

=x=100,a=3,b=(-2)

=100^2+(3+(-2))100+3*-2

10000+100+(-6)

=10100+(-6)

=10094

Answer 2

Answer:

103×98=(100+3) (100-2)

=(100)2+ (3-2)100+(3×(-2)

=10000+100-6

=10094