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In questions two equations numbered I an...

In questions two equations numbered I and II are given you have to solve both equations and give answer
`I. 3x^2-13x-10=0 II. 3y^2+10y-8=0`

A

if `xgty`

B

if`xgey`

C

if`xlty`

D

if relation between x and y can not be established

Text Solution

AI Generated Solution

The correct Answer is:
To solve the equations given in the question, we will follow these steps: ### Step 1: Solve Equation I The first equation is: \[ 3x^2 - 13x - 10 = 0 \] To solve this quadratic equation, we can use the factorization method. We need to find two numbers that multiply to \(3 \times (-10) = -30\) and add to \(-13\). The numbers that satisfy this are \(-15\) and \(2\). Thus, we can rewrite the equation as: \[ 3x^2 - 15x + 2x - 10 = 0 \] Now, we can group the terms: \[ (3x^2 - 15x) + (2x - 10) = 0 \] Factoring out common terms: \[ 3x(x - 5) + 2(x - 5) = 0 \] Now, factor out \((x - 5)\): \[ (3x + 2)(x - 5) = 0 \] Setting each factor to zero gives us: 1. \(3x + 2 = 0 \Rightarrow x = -\frac{2}{3}\) 2. \(x - 5 = 0 \Rightarrow x = 5\) ### Step 2: Solve Equation II The second equation is: \[ 3y^2 + 10y - 8 = 0 \] Again, we will use the factorization method. We need to find two numbers that multiply to \(3 \times (-8) = -24\) and add to \(10\). The numbers that satisfy this are \(12\) and \(-2\). Thus, we can rewrite the equation as: \[ 3y^2 + 12y - 2y - 8 = 0 \] Now, we can group the terms: \[ (3y^2 + 12y) + (-2y - 8) = 0 \] Factoring out common terms: \[ 3y(y + 4) - 2(y + 4) = 0 \] Now, factor out \((y + 4)\): \[ (3y - 2)(y + 4) = 0 \] Setting each factor to zero gives us: 1. \(3y - 2 = 0 \Rightarrow y = \frac{2}{3}\) 2. \(y + 4 = 0 \Rightarrow y = -4\) ### Summary of Solutions From the equations, we have: - For \(x\): \(x = -\frac{2}{3}\) or \(x = 5\) - For \(y\): \(y = \frac{2}{3}\) or \(y = -4\) ### Step 3: Establish the Relationship Between x and y Now, we need to compare the values of \(x\) and \(y\): 1. If \(x = -\frac{2}{3}\) and \(y = \frac{2}{3}\), then \(x < y\). 2. If \(x = 5\) and \(y = \frac{2}{3}\), then \(x > y\). 3. If \(x = -\frac{2}{3}\) and \(y = -4\), then \(x > y\). 4. If \(x = 5\) and \(y = -4\), then \(x > y\). Since we have different relationships depending on the values of \(x\) and \(y\), we conclude that the relationship between \(x\) and \(y\) cannot be established. ### Final Answer The relationship between \(x\) and \(y\) cannot be established. ---
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