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1) 4
2) a) 3 , b) 0 (because it is not touching the x-axis at all)
3) a) yes b) no (because a polynomial should not contain negative or fractional powers)
4) sum = -b/a ⇒ sum = = x + 1/x
product = c/a ⇒ product = = x * 1/x = 1
Solve these 2 equations and you will get the answer
5) by factor theorem,
f(-2) should be = 0 if -2 is a factor of f(a)
hence, 3(-2)² + 4(-2) + 2k = 0
12 - 8 + 2k = 0
k = -2
HOPE THIS HELPS YOU!
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