Question

2. Find the remainder (without division) when (a) x + 4x + 2 is divided by x + 2 (b) 4x2 – 3x² +5x+4 is divided by 2x +1 (c) 4x +5x2 + 6x - 7 is divided by 2x -1​

Answer 1

Answer:

I will solve the first one

Rest u can do yourself

In (a) U can just square the x+2 value

This will be like (x+2) ²

So by applying identity (a+b) ² in this value

U will get x² + 4 + 2(x)(2)

U Wil get x²+4+4x

Now just subtract the dividend that u wrote

It's x²+4x+2 ( I don't know why u wrote the question incorrect. Check before asking?)

Now subtract (x²+4x+2) - ( x²+4+4x )

U can easily get the answer now

That's the fastest method

If u don't like this

Stick to original divison process

No one can beat the method