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Andrews [41]
3 years ago
10

What’s the answer???

Mathematics
1 answer:
Ivahew [28]3 years ago
7 0
Answer should be -4 +3i
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Q(x)=x^3+ax^2+2b is divided by (x-3) and has a remainder of 4. Find the values of "a" and "b"​
Sati [7]

Answer:

Let p(x) = x3 + ax2 + bx +6

(x-2) is a factor of the polynomial x3 + ax2 + b x +6

p(2) = 0                                                                                      

p(2) = 23 + a.22 + b.2 +6 =8+4a+2b+6 =14+ 4a+ 2b = 0

7 +2 a +b = 0

b = - 7 -2a -(i)                                                                              

x3 + ax2 + bx +6 when divided by (x-3) leaves remainder 3.

p(3) = 3                                                                                      

p(3) = 33 + a.32 + b.3 +6= 27+9a +3b +6 =33+9a+3b = 3

11+3a +b =1 => 3a+b =-10 => b= -10-3a -(ii)                                    

Equating the value of b from (ii) and (i) , we have

(- 7 -2a) = (-10 - 3a)

a = -3                                                                                          

Substituting a = -3 in (i), we get

b = - 7 -2(-3) = -7 + 6 = -1

Thus the values of a and b are -3 and -1 respectively.

Step-by-step explanation:

4 0
3 years ago
... tbh idek anymore
stepan [7]
1/4 is the correct answer
4 0
3 years ago
Read 2 more answers
If i earn $8.10 and hour and worked 6 hours a day how many days would i need to work to get 470 hours.
prisoha [69]
Since 470/6 = 78.333 it would take you 78.333 days to work 470 hours.
4 0
3 years ago
I need help to find the rest
zmey [24]
And soon it'll avenue golden retriever to play with.

God, i feel so stupid writing that :(
8 0
3 years ago
Help plz:)))I’ll mark u Brainliest
shepuryov [24]

Answer:

Yes they are congruent by SAS (wrong answer)

Edit: the correct answer is by HL

5 0
3 years ago
Read 2 more answers
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