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Solve the given quadratic equations and ...

Solve the given quadratic equations and mark the correct option based on your answer -
I. ` x^(2) - 11 x + 30 = 0`
II. ` y^(2) - 15 y + 56 = 0`

A

` x gt y`

B

` x lt y`

C

` x ge y `

D

` x le t`

Text Solution

AI Generated Solution

The correct Answer is:
To solve the given quadratic equations, we will follow these steps: ### Step 1: Solve the first equation \( x^2 - 11x + 30 = 0 \) 1. **Identify the coefficients**: Here, \( a = 1 \), \( b = -11 \), and \( c = 30 \). 2. **Factor the quadratic**: We need two numbers that multiply to \( c \) (30) and add up to \( b \) (-11). The numbers are -5 and -6. 3. **Rewrite the equation**: \[ x^2 - 5x - 6x + 30 = 0 \] This can be factored as: \[ (x - 5)(x - 6) = 0 \] 4. **Find the roots**: Set each factor to zero: \[ x - 5 = 0 \quad \Rightarrow \quad x = 5 \] \[ x - 6 = 0 \quad \Rightarrow \quad x = 6 \] ### Step 2: Solve the second equation \( y^2 - 15y + 56 = 0 \) 1. **Identify the coefficients**: Here, \( a = 1 \), \( b = -15 \), and \( c = 56 \). 2. **Factor the quadratic**: We need two numbers that multiply to \( c \) (56) and add up to \( b \) (-15). The numbers are -7 and -8. 3. **Rewrite the equation**: \[ y^2 - 7y - 8y + 56 = 0 \] This can be factored as: \[ (y - 7)(y - 8) = 0 \] 4. **Find the roots**: Set each factor to zero: \[ y - 7 = 0 \quad \Rightarrow \quad y = 7 \] \[ y - 8 = 0 \quad \Rightarrow \quad y = 8 \] ### Step 3: Compare the values of \( x \) and \( y \) - The values of \( x \) are 5 and 6. - The values of \( y \) are 7 and 8. Now, we will compare the values of \( x \) and \( y \): 1. For \( x = 5 \): - \( 5 < 7 \) and \( 5 < 8 \) 2. For \( x = 6 \): - \( 6 < 7 \) and \( 6 < 8 \) From both comparisons, we can conclude that \( x < y \). ### Final Answer Thus, the relation we have is: \[ x < y \]
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