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

You are not logged in.

- Topics: Active | Unanswered

Pages: **1**

If r and s be the remainders when the polynomial

and are divided by (x+1) and (x-2) respectively and 2r + s = 6Then find the value of a

P.S: Sorry it should have been x + 1

Is the answer 2 or something else?

*Last edited by Agnishom (2012-09-24 23:34:59)*

'And fun? If maths is fun, then getting a tooth extraction is fun. A viral infection is fun. Rabies shots are fun.'

'God exists because Mathematics is consistent, and the devil exists because we cannot prove it'

'Humanity is still kept intact. It remains within.' -Alokananda

Offline

**bob bundy****Moderator**- Registered: 2010-06-20
- Posts: 6,269

put x = -1

Do a similar thing for the other and then substitute into the equation for r and s to get a

Bob

You cannot teach a man anything; you can only help him find it within himself..........Galileo Galilei

Offline

I just edited the last post there were errors

I am sorry for that

'And fun? If maths is fun, then getting a tooth extraction is fun. A viral infection is fun. Rabies shots are fun.'

'God exists because Mathematics is consistent, and the devil exists because we cannot prove it'

'Humanity is still kept intact. It remains within.' -Alokananda

Offline

**bob bundy****Moderator**- Registered: 2010-06-20
- Posts: 6,269

No worries. I've edited post 2 for this.

I make it a = -4/10 and I've checked it back in the cubics.

Maybe you should post your expressions for r and s.

Bob

You cannot teach a man anything; you can only help him find it within himself..........Galileo Galilei

Offline

Pages: **1**