Find the value if x+3 is factor of 3x2+is+6
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Step-by-step explanation:
If (x+3) is a factor of 3x²+kx+6 = f(x) then f(-3)=0 According to factor theorem.
Now,
f(-3) = 3(-3)^2 + k ( -3) + 6 = 0
3(9)-3k+6 = 0
27+6 - 3k = 0
33-3k = 0
11-k = 0
k = 11 .
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