Expand and simplfy (x+3)(x-3)(3x+2)

Step-by-step explanation:

1) Use difference of squares: a² - b² = (a + b) (a - b).

2) Simplify 3² to 9.

3) Use The FOIL method: (a + b) (c + d) = ac + ad + bc + bd.

Therefor, the answer is 3x³ + 2x² + -26x -18.

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

hiking down a winding trail.

step-by-step explanation: