The zeros of the function f(x) = 3x^2-12x -36

To find the zeros of a function, you have to solve

Note that you can factor a 3 out of your equation, which simplifies the computations a little bit:

In cases like this (i.e. when the coefficient of x^2 is 1) you can use an alternative formula which can save some time: the two solutions are two numbers such that:

- Their sum is the opposite of the x coefficient

- Their product is the constant term.

In our case, the x coefficient is -4, so we're looking for two numbers that give 4 when summed. Also, the constant term is -12, so we're looking for two numbers that give -12 when multiplied.

A bit of easy trial and error will lead to the answer

what's that

y=mx+b

step-by-step explanation:

m slope

b y-intercept