exam Maths Puzzle Numerical Ability

Evaluate the polynomial function. f(x)=2x^2-5x+11 for x=3

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exam Other Question

Please help me find the vertical line hrough the point (-80, 135). The equation 3x=3x+5 has no solution, whereas the equation 7x+8=8 has zero as a solution. Explain the difference between a solution of zero and no solution.