Question

To find the value of 194 x 206, a student uses the identity (a + b)(a - b) = a? - b2 and
rewrite it as 2002 - K?. What is the value of k?
a) 36
b) 16
c) 4
d) 6​

Answer 1

Answer:

a)36

Step-by-step explanation:

194*206=200-6*200+6

=(200)^2-(6)^2 which can be rewrite as

(200)^2-36