Question

using ( x + a) (x + b) = x²+ (a + b) x + ab , evaluate
i.). 10.1 × 9.8​

Answer 1

Answer:

129.98 is the answer

Step-by-step explanation:

hope it is useful

Answer 2

Answer:

(10 +0.1) (10-0.2)=  $10^{2}+ 10(0.1-0.2)+ (0.1 X -0.2)$

100+10(-0.1)-0.02

100-1-0.02= 99-0.02=98.98

Step-by-step explanation: