exam Maths Puzzle Numerical Ability

Can you help me solve the equation, 4x^2-35x-9?

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exam Other Question

Given the pair of inequalities,
y>x+1
y<3/2x+3
graph their solution set
Please expain how to do this

Let f(x) =x3 -8x2 + 17x -9. Use the factor theorem to find other solutions to f(x)- f(1) = 0, beside x =1.