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In each of these questions, two equation...

In each of these questions, two equations (I) and (II) are given. You have to solve both the equations and give answer
I `2x^2+5x+2=0`
II `y^2-12y+20=0`

A

`xgty`

B

`xgey`

C

`xlty`

D

`xley`

Text Solution

AI Generated Solution

The correct Answer is:
To solve the given equations step by step, we will tackle each quadratic equation separately. ### Step 1: Solve the first equation \(2x^2 + 5x + 2 = 0\) 1. **Identify the coefficients**: Here, \(a = 2\), \(b = 5\), and \(c = 2\). 2. **Use the quadratic formula**: The quadratic formula is given by: \[ x = \frac{-b \pm \sqrt{b^2 - 4ac}}{2a} \] 3. **Calculate the discriminant**: \[ b^2 - 4ac = 5^2 - 4 \cdot 2 \cdot 2 = 25 - 16 = 9 \] 4. **Substitute into the formula**: \[ x = \frac{-5 \pm \sqrt{9}}{2 \cdot 2} = \frac{-5 \pm 3}{4} \] 5. **Calculate the two possible values for \(x\)**: - For \(x_1\): \[ x_1 = \frac{-5 + 3}{4} = \frac{-2}{4} = -\frac{1}{2} \] - For \(x_2\): \[ x_2 = \frac{-5 - 3}{4} = \frac{-8}{4} = -2 \] Thus, the solutions for the first equation are: \[ x = -\frac{1}{2}, \quad x = -2 \] ### Step 2: Solve the second equation \(y^2 - 12y + 20 = 0\) 1. **Identify the coefficients**: Here, \(a = 1\), \(b = -12\), and \(c = 20\). 2. **Use the quadratic formula**: \[ y = \frac{-b \pm \sqrt{b^2 - 4ac}}{2a} \] 3. **Calculate the discriminant**: \[ b^2 - 4ac = (-12)^2 - 4 \cdot 1 \cdot 20 = 144 - 80 = 64 \] 4. **Substitute into the formula**: \[ y = \frac{12 \pm \sqrt{64}}{2 \cdot 1} = \frac{12 \pm 8}{2} \] 5. **Calculate the two possible values for \(y\)**: - For \(y_1\): \[ y_1 = \frac{12 + 8}{2} = \frac{20}{2} = 10 \] - For \(y_2\): \[ y_2 = \frac{12 - 8}{2} = \frac{4}{2} = 2 \] Thus, the solutions for the second equation are: \[ y = 10, \quad y = 2 \] ### Summary of Solutions: - From the first equation: \(x = -\frac{1}{2}, -2\) - From the second equation: \(y = 10, 2\) ### Step 3: Determine the relationship between \(x\) and \(y\) Now we compare the values of \(x\) and \(y\): - The maximum value of \(y\) is \(10\) and the minimum value of \(x\) is \(-2\). - Therefore, \(y\) is always greater than \(x\). ### Final Answer: The relationship is: \[ x < y \]
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