Question

pls fastly solve this Q pls​

Answer 1

(a) (51+49)(51-49)=(100)(2)=200

(b) (12.1 + 7.9) (12.1 - 7.9) = (20)(4.2) = 84

Answer 2

Answer:

given

51^-49^

Step-by-step explanation:

according to the formula a^-b^=(a+b)(a-b)

51^-49^

(51+49)(51-49)=100×2=200

12.1^-7.9^

(12.1+7.9)(12.1-7.9)=20×4.2=84

HOPE THIS IS HELPFUL!!