Advertisements
Advertisements
प्रश्न
If x + 2 is a factor of x2 + mx + 14, then m =
विकल्प
7
2
9
14
Advertisements
उत्तर
As (x+2)is a factor of f(x) =x^2 +mx + 14
Therefore, f(-2) =0
`(-2)^2 +m(-2)+14 = 0`
`4-2m + 14 = 0`
`m = 9`
APPEARS IN
संबंधित प्रश्न
Write the coefficient of x2 in the following:
`pi/6x^2- 3x+4`
f(x) = x4 − 3x2 + 4, g(x) = x − 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 case, if R1 + R2 = 0.
In the following two polynomials, find the value of a, if x − a is factor x6 − ax5 + x4 − ax3 + 3x − a + 2.
What must be added to 3x3 + x2 − 22x + 9 so that the result is exactly divisible by 3x2 + 7x − 6?
x3 + 13x2 + 32x + 20
Factorise the following:
6x2 + 16xy + 8y2
Factorise the following:
12x2 + 36x2y + 27y2x2
Factorise the following:
m2 + 2mn – 24n2
(x + y)(x2 – xy + y2) is equal to
