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(i) 2x^(3) = sqrt(256) II. y^(2) -9y+...

(i) ` 2x^(3) = sqrt(256)`
II.` y^(2) -9y+14 = 0`

A

x = y or no relation can be established between x & y.

B

` x lt y`

C

` x le y`

D

` x ge y`

Text Solution

AI Generated Solution

The correct Answer is:
Let's solve the given equations step by step. ### Step 1: Solve the first equation \(2x^3 = \sqrt{256}\) 1. **Calculate \(\sqrt{256}\)**: \[ \sqrt{256} = 16 \] 2. **Substitute back into the equation**: \[ 2x^3 = 16 \] 3. **Divide both sides by 2**: \[ x^3 = \frac{16}{2} = 8 \] 4. **Take the cube root of both sides**: \[ x = \sqrt[3]{8} \] Since \(8 = 2^3\), we have: \[ x = 2 \] ### Step 2: Solve the second equation \(y^2 - 9y + 14 = 0\) 1. **Factor the quadratic equation**: We need to find two numbers that multiply to \(14\) and add up to \(-9\). The numbers are \(-7\) and \(-2\). \[ y^2 - 7y - 2y + 14 = 0 \] 2. **Group the terms**: \[ (y^2 - 7y) + (-2y + 14) = 0 \] 3. **Factor by grouping**: \[ y(y - 7) - 2(y - 7) = 0 \] \[ (y - 7)(y - 2) = 0 \] 4. **Set each factor to zero**: \[ y - 7 = 0 \quad \text{or} \quad y - 2 = 0 \] Thus, we find: \[ y = 7 \quad \text{or} \quad y = 2 \] ### Step 3: Establish a relationship between \(x\) and \(y\) 1. **Values obtained**: - From the first equation, \(x = 2\). - From the second equation, \(y = 2\) or \(y = 7\). 2. **Compare values**: - If \(y = 2\), then \(x = y\). - If \(y = 7\), then \(x < y\) since \(2 < 7\). ### Conclusion The relationship can be summarized as: \[ x \leq y \] Thus, the final answer is: \[ x \text{ is less than or equal to } y \] ---

Let's solve the given equations step by step. ### Step 1: Solve the first equation \(2x^3 = \sqrt{256}\) 1. **Calculate \(\sqrt{256}\)**: \[ \sqrt{256} = 16 \] ...
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