Home
Class 14
MATHS
In the following questions two equations...

In the following questions two equations numbered I and II are given. You have to solve both the equations and answer
`4x^2 + 9x+5=0`
`3y^2 + 5y+2=0`

A

if `x gt y`

B

if `x ge y`

C

if `xlt y`

D

if `x le y`

Text Solution

AI Generated Solution

The correct Answer is:
To solve the given equations step by step, we will follow the quadratic formula method for both equations. ### Step 1: Solve the first equation \(4x^2 + 9x + 5 = 0\) 1. Identify coefficients: - \(a = 4\) - \(b = 9\) - \(c = 5\) 2. Calculate the discriminant (\(D\)): \[ D = b^2 - 4ac = 9^2 - 4 \cdot 4 \cdot 5 = 81 - 80 = 1 \] 3. Since \(D > 0\), we will have two real and distinct roots. 4. Use the quadratic formula: \[ x = \frac{-b \pm \sqrt{D}}{2a} = \frac{-9 \pm \sqrt{1}}{2 \cdot 4} \] \[ x = \frac{-9 \pm 1}{8} \] 5. Calculate the two values of \(x\): - For \(x_1\): \[ x_1 = \frac{-9 + 1}{8} = \frac{-8}{8} = -1 \] - For \(x_2\): \[ x_2 = \frac{-9 - 1}{8} = \frac{-10}{8} = -\frac{5}{4} = -1.25 \] ### Step 2: Solve the second equation \(3y^2 + 5y + 2 = 0\) 1. Identify coefficients: - \(a = 3\) - \(b = 5\) - \(c = 2\) 2. Calculate the discriminant (\(D\)): \[ D = b^2 - 4ac = 5^2 - 4 \cdot 3 \cdot 2 = 25 - 24 = 1 \] 3. Since \(D > 0\), we will have two real and distinct roots. 4. Use the quadratic formula: \[ y = \frac{-b \pm \sqrt{D}}{2a} = \frac{-5 \pm \sqrt{1}}{2 \cdot 3} \] \[ y = \frac{-5 \pm 1}{6} \] 5. Calculate the two values of \(y\): - For \(y_1\): \[ y_1 = \frac{-5 + 1}{6} = \frac{-4}{6} = -\frac{2}{3} \approx -0.67 \] - For \(y_2\): \[ y_2 = \frac{-5 - 1}{6} = \frac{-6}{6} = -1 \] ### Step 3: Compare the values of \(x\) and \(y\) We have the following values: - \(x_1 = -1\), \(x_2 = -1.25\) - \(y_1 \approx -0.67\), \(y_2 = -1\) Now we can compare: 1. \(x_1 = -1\) and \(y_1 \approx -0.67\): Here, \(x_1 < y_1\). 2. \(x_1 = -1\) and \(y_2 = -1\): Here, \(x_1 = y_2\). 3. \(x_2 = -1.25\) and \(y_1 \approx -0.67\): Here, \(x_2 < y_1\). 4. \(x_2 = -1.25\) and \(y_2 = -1\): Here, \(x_2 < y_2\). ### Conclusion From the comparisons, we can conclude that: - \(x\) is less than or equal to \(y\). Thus, the final answer is that \(x\) is smaller than or equal to \(y\).
Promotional Banner

Similar Questions

Explore conceptually related problems

In the following question, two equations numbered I and II are given. You have to solve both the equations and give answer: y^2 = 49 (x – y)^2 = 0

In the following question, two equations numbered I and II are given. You have to solve both the equations and give the answer: x^2 – 28 + 3x = 0 8y^2 - y - 9 = 0

In the following question, two equations numbered I and II are given. You have to solve both the equations and give the answer: 4x^2 – 3x - 1 = 0 2y^2 - 7y - 9 = 0

In the following questions two equations numbered I and II are given. You have to solve both the equations and Give answer I x^(2)-1=0 II. y^(2) +4y+3=0

In the following questions two equations numbered I and II are given. You have to solve both the equations and Give answer I. x^(2)-7x+12=0 II. y^(2)-12y+32=0

In the following question, two equations numbered I and II are given. You have to solve both the equations and give the answer: I. x^2-x-12=0 II. y^2+5y+6=0

In the following questions two equations numbered I and II are given. You have to solve both the equations and Give answer I. x^(3)-371 =629 II. y^(3)-543= 788

In the following questions two equation numbered I and II are given You have to solve both equations and give answer (ii) 5x-2y=31 (ii) 3x+7y=36

In the following questions two equation numbered I and II are given You have to solve both equations and give answer (i) 2x^(2)+11x+12=0 (ii) 5y^(2)+27y+10=0