Question

Using the formula ( a – b ) 2 Evaluate ( 389 ) 2

Answer 1

Step-by-step explanation:

(400-19)^2

400^2 +19^2 - 2*400*19

160000+ 361-15200

175561

Answer 2

Answer:

151321

Step-by-step explanation:

(400 - 11)^2

400^2+11^2-2×400×11

160000+121-8800

151321