Question

.Find the remainder when x^3-2x^2+5x+8 is divided by 2x+1.​

Answer 1

Answer:

Step-by-step explanation:

As promised I am here to help you

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Refer to the attachment

Quotient = 3x² - 4x + 2

Remainder = 0

Solution down

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Let f(x) = 4x3– 5x + 1

a) When f(x) is divided by x – 2, remainder,

R = f(2) = 4(2)3– 5(2) + 1 = 23

b) When f(x) is divided by x + 3, remainder,

R = f(–3) = 4(–3)3– 5(–3) + 1 = –92

c) When f(x) is divided by 2x – 1, remainde

Answer 2

Answer:

2x+1=0

2x=-1

x=-1/2

Step-by-step explanation:

x3-2x2+5x+8

(-1/2)'3-2(-1/2)'2+5(-1/2)+8

-1/8+1/2-5/2+8

-1/8+4/8-20/8+8/8

-19/8