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Sagot :
Certainly! Let's solve the given expression step-by-step:
The expression to be evaluated is:
[tex]\[ \frac{18 + \sqrt{18^2 + 4 \cdot 6 \cdot 18}}{2 \cdot 6} \][/tex]
### Step 1: Calculate the Discriminant
First, let's compute the value inside the square root:
[tex]\[ 18^2 = 324 \][/tex]
[tex]\[ 4 \cdot 6 \cdot 18 = 432 \][/tex]
Adding these together:
[tex]\[ 18^2 + 4 \cdot 6 \cdot 18 = 324 + 432 = 756 \][/tex]
### Step 2: Calculate the Square Root
Next, compute the square root of 756:
[tex]\[ \sqrt{756} \approx 27.49545416973504 \][/tex]
### Step 3: Calculate the Numerator
Add this square root value to 18:
[tex]\[ 18 + 27.49545416973504 = 45.49545416973504 \][/tex]
### Step 4: Calculate the Denominator
Calculate the denominator:
[tex]\[ 2 \cdot 6 = 12 \][/tex]
### Step 5: Divide the Numerator by the Denominator
Finally, divide the result of the numerator by the denominator:
[tex]\[ \frac{45.49545416973504}{12} \approx 3.79128784747792 \][/tex]
### Conclusion
Hence, the value of the given expression is:
[tex]\[ \frac{18 + \sqrt{18^2 + 4 \cdot 6 \cdot 18}}{2 \cdot 6} \approx 3.79128784747792 \][/tex]
The expression to be evaluated is:
[tex]\[ \frac{18 + \sqrt{18^2 + 4 \cdot 6 \cdot 18}}{2 \cdot 6} \][/tex]
### Step 1: Calculate the Discriminant
First, let's compute the value inside the square root:
[tex]\[ 18^2 = 324 \][/tex]
[tex]\[ 4 \cdot 6 \cdot 18 = 432 \][/tex]
Adding these together:
[tex]\[ 18^2 + 4 \cdot 6 \cdot 18 = 324 + 432 = 756 \][/tex]
### Step 2: Calculate the Square Root
Next, compute the square root of 756:
[tex]\[ \sqrt{756} \approx 27.49545416973504 \][/tex]
### Step 3: Calculate the Numerator
Add this square root value to 18:
[tex]\[ 18 + 27.49545416973504 = 45.49545416973504 \][/tex]
### Step 4: Calculate the Denominator
Calculate the denominator:
[tex]\[ 2 \cdot 6 = 12 \][/tex]
### Step 5: Divide the Numerator by the Denominator
Finally, divide the result of the numerator by the denominator:
[tex]\[ \frac{45.49545416973504}{12} \approx 3.79128784747792 \][/tex]
### Conclusion
Hence, the value of the given expression is:
[tex]\[ \frac{18 + \sqrt{18^2 + 4 \cdot 6 \cdot 18}}{2 \cdot 6} \approx 3.79128784747792 \][/tex]
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