A parabola with a vertex at (0,0) has a directrix that crosses the negative part of the y-axis. Which could be the equation of the parabola?

x2 = –4y
x2 = 4y
y2 = 4x
y2 = –4

let m = monomial

let t = trinomial

so, m times t = t.

monomial times a trinomial = another trinomial.

d. 8

step-by-step explanation:

the given radical expression is:

we can rewrite this as:

we express as square numbers to get;

the exponents will now cancel out to give.

the correct answer is d

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i’m sorry but i don’t know sorry