Help me with my exam please❤️

3. Rewrite n4 as (n2)2 ( n 2 ) 2 . Rewrite 49 as 72 . Since both terms are perfect squares, factor using the difference of squares formula, a2−b2=(a+b)(a−b) a 2 - b 2 = ( a + b ) ( a - b ) where a=n2 a = n 2 and b=7 .

4. Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation :

3*(x-1)^2-(27)=0

Possible solutions: x = 4, and x = -2