[21-(5+2)] square 2 times 3

Question

i want the help of simplifying this problem. then i want to know how to do every step. 

Answer 1

[21-(5+2)] ^2*3 =

 

[21 - 7]^2*3 =

 

14^2 * 3

 

196*3

 

(200-4)*3 =

 

600 - 12

 

588

 

 

Please repost the problem EXACTLY as it is written.

Use ^ for exponent and * for multiplication