Isn’t it supposed to be a minus sign? For it can be like w-2, w-2 ?
Let

be the identity matrix. Then pick whatever matrix you like for

.
Answer:
4.5
Step-by-step explanation:
I do RSM
Answer:
The answer is 1st point
Step-by-step explanation:
(12x²+4x-5)-(9x²-9x+1)
= 12x²+4x-5-9x²+9x-1
= 3x²+13x-6