Question

Find the remainder when x3+3x2+1 is divided by 2x+5

Answer 1

Answer:

x^3+3x^2+1÷2x+5

2x+5=0

2x=-5

x=-5/2

p(x)=x^3+3x^2+1

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

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

= -125/8+75/4+1

=33/8

Therefore, 33/8 is the remainder.

Step-by-step explanation:

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