Discussion about math, puzzles, games and fun. Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ π -¹ ² ³ °

You are not logged in.

- Topics: Active | Unanswered

**cooljackiec****Member**- Registered: 2012-12-13
- Posts: 160

The roots of the quadratic equation x^2 + ax + b are 2 + 3i and 2 - 3i. What is a + b?

I see you have graph paper.

You must be plotting something

Offline

**{7/3}****Member**- Registered: 2013-02-11
- Posts: 210

If a polynomial's leading coefficient is 1 and one of it's root is r then (x-r) is a factor of the polynomial,can you solve the problem now?

There are 10 kinds of people in the world,people who understand binary and people who don't.

Offline

**cooljackiec****Member**- Registered: 2012-12-13
- Posts: 160

Thanks

I see you have graph paper.

You must be plotting something

Offline

**{7/3}****Member**- Registered: 2013-02-11
- Posts: 210

You're welcome

There are 10 kinds of people in the world,people who understand binary and people who don't.

Offline