Question

find the remainder when x cube + 3 X square + 3 X + 1 is divided by 5 + 2 x​

Answer 1

Answer:

By remainder theorem...

Step-by-step explanation:

Given,

5 + 2x = 0

2x = 0 - 5 = -5

x = -5/2

p(x) = x³ + 3x² + 3x + 1

p(-5/2) = (-5/2)³ + 3(-5/2)² + 3(-5/2) + 1

= (-125/8) + 3(25/4) + (-15/2) + 1

= -125/8 + 75/4 - 15/2 + 1

Rest solve by lcm and i guess you know how to take lcm