Answer:

Step-by-step explanation:
<h3>Trigonometry:</h3>


St meaans s times t
s=-4
t=9
st=-4 times 9
negative times positive=negative
4 times 9=36
-4 time s9=-36
st=-36
answer is -36
Answer:
The answer is -86
Step-by-step explanation:
-7 squared is 49
49 × 2 = 98
12-98= -86
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