Advertisements
Advertisements
Question
If f(x) = 2x2 - 13x2 + 17x + 12 find f(-3).
Advertisements
Solution
We have
f(x) = 2x2 - 13x2 + 17x + 12
f(-3) = 2 × (-3)3 - 13 × (-3)2 + 17 × (-3) + 12
= 2 × (-27) - 13 × (9) + 17 × (-13) + 12
= -54 - 117 - 51 + 12
= -222 + 12
= 210
APPEARS IN
RELATED QUESTIONS
Write the degrees of the following polynomials:
`5y-sqrt2`
Identify polynomials in the following:
`p(x)=2/3x^3-7/4x+9`
Find the remainder when x3 + 3x2 + 3x + 1 is divided by \[x - \frac{1}{2}\].
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 cases, if 2R1 − R2 = 0.
Find the values of a and b, if x2 − 4 is a factor of ax4 + 2x3 − 3x2 + bx − 4.
In the following two polynomials, find the value of a, if x + a is a factor x3 + ax2 − 2x +a + 4.
If x3 + ax2 − bx+ 10 is divisible by x2 − 3x + 2, find the values of a and b.
2x4 − 7x3 − 13x2 + 63x − 45
Find the remainder when x3 + 4x2 + 4x − 3 is divided by x.
Factorise the following:
(a + b)2 + 9(a + b) + 18
