Answer:
a. 
b. 3
c. 
d. 
Step-by-step explanation:
This is a simple quadratic formula "substitution".
Essentially what you do is replace the "b" in the formula given above, with a "b" value from your given choices, same goes for "a" and "c" values.
You replace them and then solve the quadratic formula equation.
Ex. For the first set of values in your question, you make the formula into:
And there you would solve normally.
2 squared is 4, so you get 4 - [4 * 5 * -6]
Which after solving leaves you with: 
Then you do Prime Factorization of 124, leaving you with: 
Then you apply the radical rule, leaving you with:
There would be 12 pieces because if you only have one foot long sandwich and cut it in to 1/3's you would have 3 pieces and just multiply 4 by 3 and you'll get 12
The step 7 is a wrong step, because in the denominator 1 is written in place of 2.
<h3>What is a quadratic equation?</h3>
The quadratic equation is given as ax² + bx + c = 0. Then the degree of the equation will be 2. Then we have
Two of the steps in the derivation of the quadratic formula are shown below.
The equation is given below.
Then the above equation can be written as
The step 7 is a wrong step, because in the denominator 1 is written in place of 2.
More about the quadratic equation link is given below.
brainly.com/question/2263981
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Answer:
12 x13 = 156
Step-by-step explanation:
Answer:
B and D people. Your welcome.
Step-by-step explanation:
