Question

20. Using (x+a) (x+b)=x2 +
(a-b)x=ab, find 103x98​

Answer 1

Answer:

10094

Step-by-step explanation:

The formula you've written is wrong

the correct formula is :

{x + a}{x + b} = x² + ( a+b )x + ab

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

= 100²+(3+(-2))×100+(3×(-2))

=10000 + 1×100 + (-6)

=10000+100-6

=10094