Answer:
standard form is x^2-3x-4=0
which is a^2+bx+c=0
so the value of a=1 , b= -3 and c= -4
Answer:

Step-by-step explanation:

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Answer:
C
Step-by-step explanation:
If you look closely.. You can see that one is longer than the other
Yes 81 is divisible by 3
the answer is 27
because 81 divided by 3 = 27