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:
Step-by-step explanation:
n=12.4+23.79-5.27
n=30.92
Answer:
480 miles
Step-by-step explanation:
120/1.5=80
80*6=480
no way dude really? thats so cool