exam Maths Puzzle Numerical Ability

if i represents the imaginary number whose square is -1,then (radical2 + radical2 x i)^4= ?

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exam Other Question

for what values of x is :

2 ln (x-1) > e^(x-4) - 2
determine whether the equation has 2 solutions, 1 solution, or no solution. SHOW WORK! PUT IN STANDARD FORM!

22)x^2-3x+2=0
24)-3x^2+5x-1=0
26)x^2-2x+4=0
28)3x^2-6x+3=0
30)-5x^2+6x-6=0