Find D when 8x^3-12x^2-2x+D is divided by 2x+1 when the remainder is -2

8x3-12x2-2x+D...(1)

2x+1...(2)

Assume 2x+1=0 so x=-1/2

8x3-12x2-2x+D=-2... when divided by (2)

substitute -1/2 into all X values

rearrange to find D

SW

Related Maths A Level answers

All answers ▸

1. (a) Find the sum of all the integers between 1 and 1000 which are divisible by 7. (b) Hence, or otherwise, evaluate the sum of (7r+2) from r=1 to r=142


Find the equation of the tangent at x=1 for the curve y=(4x^2+1)^3


find dy/dx where y = a^x


find the coordinate of the maximum value of the function f(x) = 9 – (x – 2)^2