exam Maths Puzzle Numerical Ability

Solve the following quadratic equation.

4x^2 = 13x + 12

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exam Other Question

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7 square root of 5 - square root of 5 + 5 square root of 3 - 3square root of 3
I am stuck on this equation. Any help would be appreciated.

x^3+2x^2+x+12 over x+3