Simplify: (1 + {2 √(3) }^(2) ) - (1 - {2 √(3) }^(2) ) Pls help solve this also​

Question

Simplify:


`(1 + {2 √(3) }^(2) ) - (1 - {2 √(3) }^(2) )`
Pls help solve this also​

Answer 1

Answer: 12

step-by - step
( 1+2 radical 9 ) - ( 1-2 radical 9)
1+2*3 - ( 1-2*3 )
1+6 - ( 1-6)
1+6- -5
7+5
12

Answer 2

12

Explanation:

[1+(2×3)]-[1-(2×3)]

[1+6]-[1-6]

12