exam Maths Puzzle Numerical Ability

add (3x^3-5x+2)-(2x^3-5x^2-5x+4)

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exam Other Question

Write three quadratic equations, with a,b and c (coefficients of x^2,x and the constant) as;
1. Integars
2. Rational numbers
3. Irrational numbers
give a counter example that demonstrates that the converse of the statement is false.

if an angle measures 94 degrees then it is obtuse