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In each of these questions, two equation...

In each of these questions, two equations I. and II. are give. you have to solve both the equations and give answer
I. ` ( x + 15) ^(2) = ( y + 19) ^(2)`
II. ` x^(2) - y^(2) = 112 `

A

` x gt y `

B

` x lt y `

C

` x ge y `

D

` x le y`

Text Solution

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The correct Answer is:
To solve the given equations step by step, we have: ### Given Equations: 1. \( (x + 15)^2 = (y + 19)^2 \) 2. \( x^2 - y^2 = 112 \) ### Step 1: Solve the first equation The first equation can be simplified using the property of squares: \[ (x + 15)^2 = (y + 19)^2 \] This implies: \[ x + 15 = y + 19 \quad \text{or} \quad x + 15 = -(y + 19) \] **Case 1:** \[ x + 15 = y + 19 \] Rearranging gives: \[ x - y = 4 \quad \text{(Equation A)} \] **Case 2:** \[ x + 15 = -y - 19 \] Rearranging gives: \[ x + y = -34 \quad \text{(Equation B)} \] ### Step 2: Solve the second equation The second equation is: \[ x^2 - y^2 = 112 \] This can be factored as: \[ (x - y)(x + y) = 112 \] ### Step 3: Substitute Equation A into the second equation Using Equation A \( (x - y = 4) \): \[ 4(x + y) = 112 \] Solving for \( x + y \): \[ x + y = \frac{112}{4} = 28 \quad \text{(Equation C)} \] ### Step 4: Solve the system of equations Now we have two equations: 1. \( x - y = 4 \) (Equation A) 2. \( x + y = 28 \) (Equation C) We can add these two equations: \[ (x - y) + (x + y) = 4 + 28 \] This simplifies to: \[ 2x = 32 \] So, \[ x = \frac{32}{2} = 16 \] ### Step 5: Find the value of y Substituting \( x = 16 \) back into Equation A: \[ 16 - y = 4 \] Solving for \( y \): \[ y = 16 - 4 = 12 \] ### Final Values Thus, we have: - \( x = 16 \) - \( y = 12 \) ### Conclusion Now we can state the relationship between \( x \) and \( y \): - Since \( 16 > 12 \), we conclude that \( x > y \).
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