exam Maths Puzzle Numerical Ability

Evaluate if possible.

the square root of -4

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exam Other Question

PLEASE I NEED HELP ON THIS PROBLEMS: (3X^2-6)^2=

X^4-16=

(X+7)(X+9)=

X^2+14X+33= If I dove from a 30 foot diving board into a pool and went 27 feet into the water. What is the total distance I traveled?