Which expression is the factored equivalent of x2 - 7x + 12?

A very good way to remember how to factor for something like this is using the technique:

x^2

ADDS TO 7

MULITPLIES TO 12

So, clearly, we can see that 4 & 3 add to 7 and multiply to 12. When you take into account the negative sign in front of the 7, we get:

x^2 - 7x + 12 = (x-4)(x-3)

-4 + -3 = -7

-4 * -3 = +12

step-by-step explanation:

given that there are two triangles j'k'l' and jkl>

the former is got by dilating the second one.

when drawn on a grid, (graph paper) coordinates of vertices of first triangle is

(6,12)j, (9,6)k and (12,9)l

side jk has length = distance between j and k

=

side j'k'=distance between j' and k'

=

ie j'k'l' has sides 1/3 of that of corresponding sides of jkl.

hence scale factor of 1/3 is used to get j'k'l'from jkl

the first one

step-by-step explanation:

just id the test.