He made a mistake in step #2. It seemed to be a trivial mistake because it involved signs, but it still had a great impact. Since step#2, his solution was already wrong.
Instead of
(-1)²-4(2)(-6) = 1 + 48 = 49
What he did is
(-1)²-4(2)(-6) = -1 + 48 = 47
Answer:
Pentagon and I think the area is 19.89 so if you round it, that will be 19.9
Answer:
Step-by-step explanation:
Answer:
Step-by-step explanation: