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# Tutor profile: Anca A.

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Anca A.
Mathematics Tutor for 4 years
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## Questions

### Subject:Number Theory

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Question:

Give the precise definition of divides.

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Anca A.

Suppose that a and d are integers. Then d divides a, denoted d | a, if and only if there exists an integer m such that a = md.

### Subject:Discrete Math

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Question:

What is the Cartesian Product of set A={4,5} and set B={g,h}?

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Anca A.

{(4,g),(4,h),(5,g),(5,h)}

### Subject:Algebra

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Question:

Explain and state the Quadratic Formula.

Inactive
Anca A.

The Quadratic Formula was devised as a way to solve zeros of quadratic functions in the standard form Ax^2+Bx+C=0. The Quadratic Formula is [(-B)+-(sqrt(B^2-4AC))] / 2A. Note: The +- is read as "plus minus" which yields the two solutions for the quadratic formula.

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