Hi there,
There appears to be no question....
Answer:

Step-by-step explanation:
Using the exact values of the given trig functions, then
sin45° × sin30° × cos60°
=
×
×
= 
(-9x²-2x) - (-9x²-3x) = (-9x²-2x) +(9x²+3x) = -9x²-2x+9x²+3x = (-9x²+9x²)+(-2x+3x) = x
Answer:
[6 12 2]
[0 0 0]
[0 6 2]
Step-by-step explanation: