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- Video Course
- Video Course Overview - READ FIRST
- General GMAT Strategies - 7 videos (all free)
- Data Sufficiency - 16 videos (all free)
- Arithmetic - 38 videos (some free)
- Powers and Roots - 36 videos (some free)
- Algebra and Equation Solving - 73 videos (some free)
- Word Problems - 48 videos (some free)
- Geometry - 42 videos (some free)
- Integer Properties - 38 videos (some free)
- Statistics - 20 videos (some free)
- Counting - 27 videos (some free)
- Probability - 23 videos (some free)
- Analytical Writing Assessment - 5 videos (all free)
- Reading Comprehension - 10 videos (all free)
- Critical Reasoning - 38 videos (some free)
- Sentence Correction - 70 videos (some free)
- Integrated Reasoning - 17 videos (some free)

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## Comment on

Rational Sum of Solutions## Solved.

## I would have chosen -1 as the

## That's correct. -1 is only

That's correct. -1 is only one of the two possible solutions. The other is -3. So, we must add the two solutions to get -1 + 3 = 2

## Hi Brent,

Can we after seeing the value of b(square) - 4ac >0,

Directly deduce that since it is a quadratic equation and will be having two solutions (for such type of questions) ?

## That's true, but in order to

That's true, but in order to determine the sum, you still need to solve the equation.

## We could use also the Vieta's

## Yes, that's absolutely

Yes, that's absolutely correct. Good idea.

Cheers,

Brent

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