Answer:

Therefore, Option 1 is correct.
Step-by-step explanation:
We have been given the quadratic equation:

If we compare it will general quadratic equation which is: 
Here, a=5,b=3 and c= -4.
Now, we will use the formula:
And then 
Where,

Therefore, Option 1 is correct.
Answer:
The first term should be positive
She did not distribute the -4 properly
She added
to negative -4 instead of multiplying
Step-by-step explanation:
In order to tell where she is wrong we should solve the question our selves. we are going to get the following......

So now we see that the three things she did wrong are.
The first term should be positive
She did not distribute the -4 properly
She added
to negative -4 instead of multiplying
Hope this helps :)
<span>Not included first digit (6), there are 7 digits so
62 500 000 = 6.25×10^7</span>