Question

Which of the following polynomials does not have real roots?

A. x2 - 17x - 7
B. -x4 + 4x2 + 6
C. x4 + 2x2 + 2
D. 2x2 - 13

Answer 1

(x^2+1)^2=c

Answer 2

lorda mercy. for each one you have to compute
\[b^2-4ac\]

Answer 3

if it is negative, then no real zeros

Answer 4

C.

Answer 5

looks like A has quad^ see satellite

Answer 6

D does for sure

Answer 7

b works too

Answer 8

oh you are right. no matter since it is a quadratic in x^2 though

Answer 9

they are all quadratics i think is why you can just compute the discriminant

Answer 10

i think your right too, i dont see any imagin's in these

Answer 11

c is out. it has no real zeros

Answer 12

opps i put( x^2+1^2 but thats wrong

Answer 13

4-4(1)(2)<0 so it does have imagin's

Answer 14

Does someone want to take a quiz for me on apex??

Answer 15

haha i would but its only going to hurt you in the long run.

Answer 16

no it's not. i just need help on this one quiz

Answer 17

sporry apex i had to leave but if i can help please ask me