Question

I am totally confused about this

Answer 1

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`\bold{Solution~Steps:}`

1.) Input
`a=4`,
`b=3`, and
`c=9` into the equation.

• 
  `(4^2-2*3*9)/(7)`

2.) Calculate 4 to the power of 2.

• 
  `4^2=16`

• Equation at the end of this step:
  `(16-2*3*9)/(7)`

3.) Multiply 2 and 3.

• 
  `2` ×
  `3=6`

• Equation at the end of this step:
  `(16-6*9)/(7)`

4.) Multiply 6 and 9.

• 
  `6` ×
  `9=54`

• Equation at the end of this step:
  `(16-54)/(7)`

5.) Subtract 54 from 16.

• 
  `16-54=-38`

• Equation at the end of this step:
  `(-38)/(7)`

6.) Fraction
`(-38)/(7)` can be rewritten as a decimal by dividing:

• 
  `-38` ÷
  `7=-5.42857143`

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`\bold{Answer:}`

• 
  `-5.42857143`

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