exam Maths Puzzle Numerical Ability

Find the Domain of the function:

(x^4 - 2x^2 +7)/ (3x^2 -10x -8)

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exam Other Question

When solving a quadratic equation you have 0,1,2 solutions. What does this mean "graphically? Yah i know another icky work problem they always trip me up. can anyone plese assist me with this one. thank you
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