Question

1) factorize x^2+8x+7
2) find remainder when x^3+1 is divided by 2x+1

Answer 1

Answer:

teachoo.com

Example 9

Find the remainder when x4 + x³ - 2x² + x + 1 is divided by x - 1.

Dividing x4 + x³ - 2x² + x + 1 by x-1.

Dividend

Divisor

Step 1:

Put

Divisor = 0

x-1=0

x = 1

Step 2:

Let

p(x) = x² + x³2x² + x + 1

Putting x = 1

p(1) (1)4+ (1)³-2(1)²+1+1