exam Maths Puzzle Numerical Ability

Please help factor, this one, I find very difficult. thanks!

(t^2+2)^2+4(t^2+2)-32

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exam Other Question

Find the slope of the line that passes through (0,2) and (4,4) In the drawing line AX bisects angle BAC; triangle ABC is isosceles; m(angle BCA)=72 degrees, find BX