exam Maths Puzzle Numerical Ability

Find all numbers for which the rational expression is undefined. Simplify your answer. Use an integer or a fraction. Use a comma to separate answers as needed.

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exam Other Question

I cannot figure out how to solve this quadratic equation.
Solve for x:

2x^2 + 3bx + b^2 = 0

Thank you,
Melody Salzer A cement pipe has an outside diameter of 11 1/4 in.and a wall thickness of 1 1/8 in. What is the inside diameter of the pipe?