Advertisements
Advertisements
Question
f(x) = 4x4 − 3x3 − 2x2 + x − 7, g(x) = x − 1
Advertisements
Solution
Let us denote the given polynomials as
`f (x) = 4x^4 - 3x^3 - 2x^2 + x - 7`
`g(x) = x-1`
We have to find the remainder when f(x) is divided byg(x).
By the remainder theorem, when f(x) is divided by g(x) the remainder is
`f(1) = 4(1)^4 - 3(1)^3 - 2(1)^2 + 1-7`
` = 4 - 3- 2 + 1- 7`
` = -7`
Now we will show remainder by actual division

So the remainder by actual division is −7
APPEARS IN
RELATED QUESTIONS
Write the degrees of the following polynomials:
`12-x+2x^3`
Write the degrees of the following polynomials:
`5y-sqrt2`
Identify polynomials in the following:
`f(x)=2+3/x+4x`
\[f(x) = 3 x^4 + 2 x^3 - \frac{x^2}{3} - \frac{x}{9} + \frac{2}{27}, g(x) = x + \frac{2}{3}\]
If the polynomials 2x3 + ax2 + 3x − 5 and x3 + x2 − 4x +a leave the same remainder when divided by x −2, find the value of a.
The polynomials ax3 + 3x2 − 3 and 2x3 − 5x + a when divided by (x − 4) leave the remainders R1 and R2 respectively. Find the values of the following case, if R1 + R2 = 0.
If both x + 1 and x − 1 are factors of ax3 + x2 − 2x + b, find the values of a and b.
If x2 + x + 1 is a factor of the polynomial 3x3 + 8x2 + 8x + 3 + 5k, then the value of k is
Factorise the following:
x² + 10x + 24
Factorise the following:
m2 + 2mn – 24n2
