f(x)=4x^2+6x-1, Round to the nearest hundredth. If there is more than one answer, separate them with commas. If there are no real zeros, it’s “None”.

Answer 1

Since decimal answers are OK, I used the graphing calculator and used the zero feature. You could do them manually by using the quadratic equation if you wanted.

0.15 and -1.65 are the real zeros

Answer 2

It seems like the question is looking for the zeroes.

Therefore, the next step is to factor and set it equal to 0

Since the equation is no factorable, you use the quadratic formula.

Plugging in the respective values for a, b, and c you end up with two x values.

The two coordinates are: (-3+ sqrt(13))/4,0)

(-3 - sqrt(13))/4, 0)