exam Maths Puzzle Numerical Ability

When do slove a radical equation using factoring or completing the square, what do you do when c=0?

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exam Other Question

What is the equation of the axis of symmetry for the quadratic function f(x) = -3x2 + 3x - 2?

a. x = 1/2
b. x = -1/2
c. x = 0
d. x = -3
e. None of the others I need help figuring out the answer to this problem:

x^2 + 2x OVER 3x MINUS x^2 + 5x + 6 OVER 3x = ?

thank you for your time.