Question

What are the zeros of the function y= 2x^2+9x+4?
a. x= -1/2, x= -4
b. x= -1/2 , x= 4
c x=1/2 , x=4
d. x=1/2, x= -4

Answer 1

A

Answer 2

-1/2 and -4

Answer 3

it this pre cal?

Answer 4

Factor this: 2x^2+9x+4 =0

(x+4) * (2x + 1) = 0

x + 4 = 0 or 2x + 1 = 0

Solve each equation for x to get the two roots.

@clamin

Answer 5

Alternative Method:

For each answer choice, plug in the given x values one at a time. You can represent `1/2` as `0.5` if fractions throw you off. IF you plug in a certain x value and you get 0 as a result, then that x value you plugged in is a root.

a `root` is another term for `zero` or `x-intercept`