Home
Class 14
MATHS
2x^(2) - 9x+10 = 0 y^(2) - 18y+72 = 0...

` 2x^(2) - 9x+10 = 0`
` y^(2) - 18y+72 = 0`

A

`x gt y`

B

` x lt y`

C

` x ge y`

D

` x le y`

Text Solution

AI Generated Solution

The correct Answer is:
To solve the equations \(2x^2 - 9x + 10 = 0\) and \(y^2 - 18y + 72 = 0\) and establish a relationship between \(x\) and \(y\), we will follow these steps: ### Step 1: Solve the equation for \(x\) We start with the equation: \[ 2x^2 - 9x + 10 = 0 \] To factor this quadratic equation, we look for two numbers that multiply to \(2 \times 10 = 20\) and add up to \(-9\). The numbers \(-4\) and \(-5\) fit this requirement. We can rewrite the equation as: \[ 2x^2 - 4x - 5x + 10 = 0 \] Now, we group the terms: \[ (2x^2 - 4x) + (-5x + 10) = 0 \] Factoring out the common terms gives us: \[ 2x(x - 2) - 5(x - 2) = 0 \] Now, we can factor out \((x - 2)\): \[ (2x - 5)(x - 2) = 0 \] Setting each factor to zero gives us the solutions for \(x\): \[ 2x - 5 = 0 \quad \Rightarrow \quad x = \frac{5}{2} \] \[ x - 2 = 0 \quad \Rightarrow \quad x = 2 \] ### Step 2: Solve the equation for \(y\) Next, we solve the equation: \[ y^2 - 18y + 72 = 0 \] We need to find two numbers that multiply to \(72\) and add up to \(-18\). The numbers \(-6\) and \(-12\) work. We can rewrite the equation as: \[ y^2 - 6y - 12y + 72 = 0 \] Grouping the terms gives us: \[ (y^2 - 6y) + (-12y + 72) = 0 \] Factoring out the common terms gives: \[ y(y - 6) - 12(y - 6) = 0 \] Factoring out \((y - 6)\): \[ (y - 12)(y - 6) = 0 \] Setting each factor to zero gives us the solutions for \(y\): \[ y - 12 = 0 \quad \Rightarrow \quad y = 12 \] \[ y - 6 = 0 \quad \Rightarrow \quad y = 6 \] ### Step 3: Establish the relationship between \(x\) and \(y\) Now we have the values for \(x\) and \(y\): - \(x = \frac{5}{2}\) or \(x = 2\) - \(y = 12\) or \(y = 6\) To establish a relationship, we compare the values: - For \(x = 2\): \(y = 6\) (which means \(y > x\)) - For \(x = \frac{5}{2}\): \(y = 12\) (which also means \(y > x\)) Thus, in both cases, we find that \(y > x\). ### Final Conclusion The relationship established is: \[ y > x \]

To solve the equations \(2x^2 - 9x + 10 = 0\) and \(y^2 - 18y + 72 = 0\) and establish a relationship between \(x\) and \(y\), we will follow these steps: ### Step 1: Solve the equation for \(x\) We start with the equation: \[ 2x^2 - 9x + 10 = 0 \] To factor this quadratic equation, we look for two numbers that multiply to \(2 \times 10 = 20\) and add up to \(-9\). The numbers \(-4\) and \(-5\) fit this requirement. ...
Promotional Banner

Topper's Solved these Questions

  • DATA SUFFICIENCY AND DATA ANALYSIS

    IBPS & SBI PREVIOUS YEAR PAPER|Exercise Multiple choice question|126 Videos
  • NUMBER SYSTEM, AVERAGE & AGE

    IBPS & SBI PREVIOUS YEAR PAPER|Exercise MCQs|72 Videos

Similar Questions

Explore conceptually related problems

I. x^(2) - 10x+24 = 0 II. y^(2) - 9y + 20 = 0

I. 20x^(2) + 9x+1 = 0" " II. 30y^(2) + 11y + 1= 0

(i) x^(2) -10x+21 = 0 (ii) y^(2) -11y+18 = 0

I. x^(2) + 17x+72 = 0" " II. y^(2) + 19y + 90 = 0

The circles x^(2)+ y^(2) -6x-2y +9 = 0 and x^(2) + y^(2) =18 are such that they :