Question

simplify and find the values of the following if a = -1 , b = 1 , c = 0 and x = -1
( x + 2a )2 - ( 2x - a )2 + ( a - x )2​

Answer 1

Answer:

10

Step-by-step explanation:

( x + 2a )² - ( 2x - a )² + ( a - x )²

= [(-1) + 2 x (-1)]² - [2 x (-1) - (-1)]² + [(-1) - (-1)]²

= (-1 -2)²[2 x -1-(-1)]² + [-1-1(-1)]²

= (-3)²[-2 - (-1)]² + [-1-1(-1)]²

= (-3)² + (-2 + 1)² + [-1-1(-1)]²

= (-3)² (-1)² + (-1 + 1)²  

= 3² x 1² + 0

= 9 x 1 + 0

= 9 + 0

= 10