Friday

November 28, 2014

November 28, 2014

Posted by **rohit** on Sunday, April 15, 2012 at 11:06am.

- math -
**Reiny**, Sunday, April 15, 2012 at 12:43pmsince x^2 - 3x + 2 = (x-2)(x-1)

so x^3 + ax^2 -bx + 10 must be divisible by both

x-2 and x-1

let f(x) = x^3 + ax^2- bx + 10

f(2) = 5 + 4a - 2b + 10 = 0 ---> 4a - 2b = -15

f(1) = 1 + a - b + 10 ---> a-b = -11 or a = b-11

sub 2nd into 1st

4(b-11) - 2b = -15

4b - 44 - 2b = -15

2b = 29

b = 29/2

then a = 29/2 - 11 = 7/2

**Answer this Question**

**Related Questions**

math - Find the value of the missing digit that makes the statement true. 214,...

math - find a such that f(x)= ax2-4x+3 has a maximum value of 12

math - find a such that f(x)= ax2-4x+3 has a maximum value of 12

Math - The question is this: You know that a number is divisible by 6 if it is ...

math - is 504 divisible by 2,4,6,8 is 111 divisible by 3,9 is 3,217 divisible by...

Math PLEASE HELP!!! - Which of the following is false? a. A number that is ...

math - Using the numbers 1 through 9 with no repeats, find a 9 number such that...

Math - True or fals: a number is divisible by 8 if it is divisble by 4 and ...

Math - Divisibility and Factors - If c and d are integers, d is divisible by 30...

Math - Which of the following is false? a. A number that is divisible by 3 and ...