exam Maths Puzzle Numerical Ability

Find the solutions to the equation: x^2+2x-8=0

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exam Other Question

if 6 and x have the same mean average as 2,4, and 24, what is the value of x change -sqrt3 + i in trigonometric form and find

1. (-sqrt3+i)^5, answer in rectangular form such as a+bi?

2. (-sqrt3 + i)^1/3, write all answers separately in trigonometric form using degree angles?