if x+2 is a factor of X2+ax+2b and a+b=4 then a and b=
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Answered by
6
Answer:
a= 3 and b = 1
Step-by-step explanation:
x+2 = 0
=>x= -2
putting the value of x
x²+ax+2b = 0
(-2)²+ (-2a) +2b =0
4 -2a + 2b = 0
2(2-a+b) = 0
2-a+b = 0/2
2-a+b = 0
2+b = a
According to the question....
a+b= 4
(2+b)+b = 4
2b= 4-2
b = 2/2
b= 1
a=4-b
= 4-1
= 3
Answered by
3
answer..a=3,b=1.
(a+b)=4
(3+1)=4
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