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Two equations (I) and (II) are given in ...

Two equations (I) and (II) are given in each questions . On the basis of these equations you have to decide the relation between 'x' and 'y' and give answer
I. ` 77 x^(2) + 58 x + 8 = 0 `
II. ` 42 y^(2) + 59 y + 20 = 0 `

A

If ` x gt y `

B

If ` x ge y `

C

If ` x lt y `

D

If ` x le y `

Text Solution

AI Generated Solution

The correct Answer is:
To solve the given equations and determine the relationship between \( x \) and \( y \), we will follow these steps: ### Step 1: Solve Equation I The first equation is: \[ 77x^2 + 58x + 8 = 0 \] We will factor this quadratic equation. We need to find two numbers that multiply to \( 77 \times 8 = 616 \) and add to \( 58 \). After breaking down \( 58x \) into \( 44x + 14x \), we rewrite the equation: \[ 77x^2 + 44x + 14x + 8 = 0 \] Now, we can group the terms: \[ (77x^2 + 44x) + (14x + 8) = 0 \] Factoring out the common terms: \[ 11x(7x + 4) + 2(7x + 4) = 0 \] Now, we can factor out \( (7x + 4) \): \[ (7x + 4)(11x + 2) = 0 \] Setting each factor to zero gives us: 1. \( 7x + 4 = 0 \) → \( x = -\frac{4}{7} \) 2. \( 11x + 2 = 0 \) → \( x = -\frac{2}{11} \) ### Step 2: Solve Equation II The second equation is: \[ 42y^2 + 59y + 20 = 0 \] We will factor this quadratic equation similarly. We need to find two numbers that multiply to \( 42 \times 20 = 840 \) and add to \( 59 \). Breaking down \( 59y \) into \( 35y + 24y \), we rewrite the equation: \[ 42y^2 + 35y + 24y + 20 = 0 \] Now, we group the terms: \[ (42y^2 + 35y) + (24y + 20) = 0 \] Factoring out the common terms: \[ 7y(6y + 5) + 4(6y + 5) = 0 \] Now, we can factor out \( (6y + 5) \): \[ (6y + 5)(7y + 4) = 0 \] Setting each factor to zero gives us: 1. \( 6y + 5 = 0 \) → \( y = -\frac{5}{6} \) 2. \( 7y + 4 = 0 \) → \( y = -\frac{4}{7} \) ### Step 3: Compare Values of \( x \) and \( y \) Now we have the values for \( x \) and \( y \): - \( x = -\frac{4}{7} \) or \( x = -\frac{2}{11} \) - \( y = -\frac{5}{6} \) or \( y = -\frac{4}{7} \) We can compare these values: 1. Comparing \( x = -\frac{4}{7} \) with \( y = -\frac{4}{7} \): - Here, \( x = y \). 2. Comparing \( x = -\frac{2}{11} \) with \( y = -\frac{5}{6} \): - To compare, we can convert both fractions to a common denominator: - \( -\frac{2}{11} \) is approximately \( -0.1818 \) - \( -\frac{5}{6} \) is approximately \( -0.8333 \) - Thus, \( -\frac{2}{11} > -\frac{5}{6} \) or \( x > y \). ### Final Relation Combining the results: - From the first comparison, we have \( x = y \) when \( x = -\frac{4}{7} \). - From the second comparison, we have \( x > y \) when \( x = -\frac{2}{11} \). Thus, the final relation is: \[ x \geq y \] ### Conclusion The answer is: **Option B: \( x \geq y \)**
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