Question

Using ( x + a)(x + b) = x2 + (a + b)x + ab, find 103 x 98​

Answer 1

Step-by-step explanation:

given

103 x 98

= (100+3)(100-2)

= 100²+(3+2)100+6

= 10000+500+6

= 10506

Answer 2

Step-by-step explanation:

103=100+3

98=100-2

(x+a)(x+b)=x²+(a+b)x+ab

103×98=(100+3)(100-2)=100²+[3+(-2)]×100+(3)(-2)

103×98=10,000+(1×100)-6

103×98=10,000+100-6

103×98=10,094