English

Solve the Following Quadratic Equations by Factorization: `7x + 3/X=35 3/5`

Advertisements
Advertisements

Question

Solve the following quadratic equations by factorization:

`7x + 3/x=35 3/5`

Advertisements

Solution

We have been given,

`7x + 3/x=35 3/5`

`7x^2+3/x=(35+3/5)x`

`7x^2-(35+3/5)x+3=0`

Therefore,

`7x^2-35x-3/5x+3=0`

`7x(x-5)-3/5(x-5)=0`

`(7x-3/5)(x-5)=0`

Therefore,

`7x-3/5=0`

`7x=3/5`

`x=3/35`

or,

x - 5 = 0

x = 5

Hence, `x=3/35` or x = 5.

shaalaa.com
  Is there an error in this question or solution?
Chapter 4: Quadratic Equations - Exercise 4.3 [Page 21]

APPEARS IN

R.D. Sharma Mathematics [English] Class 10
Chapter 4 Quadratic Equations
Exercise 4.3 | Q 62 | Page 21

RELATED QUESTIONS

John and Jivanti together have 45 marbles. Both of them lost 5 marbles each, and the product of the number of marbles they now have is 124. We would like to find out how many marbles they had to start with.


Solve the following quadratic equations by factorization:

`1/x-1/(x-2)=3` , x ≠ 0, 2


Three consecutive positive integers are such that the sum of the square of the first and the product of other two is 46, find the integers.


The difference of squares of two numbers is 180. The square of the smaller number is 8 times the larger number. Find two numbers.


A train covers a distance of 90 km at a uniform speed. Had the speed been 15 km/hour more, it would have taken 30 minutes less for a journey. Find the original speed of the train.


Solve of the following equations, giving answer up to two decimal places.

3x2 – x – 7 =0


Solve:

`1/(x + 1) - 2/(x + 2) = 3/(x + 3) - 4/(x + 4)`


Solve the following quadratic equations by factorization: 

`4/(x+2)-1/(x+3)=4/(2x+1)`


Solve the following quadratic equations by factorization: \[\frac{2}{x + 1} + \frac{3}{2(x - 2)} = \frac{23}{5x}; x \neq 0, - 1, 2\]


If 1 is a root of the quadratic equation \[3 x^2 + ax - 2 = 0\] and the quadratic equation \[a( x^2 + 6x) - b = 0\] has equal roots, find the value of b.


Show that x = −2 is a solution of 3x2 + 13x + 14 = 0.


Solve the following equation:  4x2 - 13x - 12 = 0


The sum of the square of two numbers is 233. If one of the numbers is 3 less than twice the other number. Find the numbers.


Solve equation using factorisation method:

4(2x – 3)2 – (2x – 3) – 14 = 0


In a two digit number, the unit’s digit is twice the ten’s digit. If 27 is added to the number, the digit interchange their places. Find the number.


Solve the following quadratic equation by factorisation:
(x - 4) (x + 2) = 0


Solve the following quadratic equation by factorisation:
9x2 - 3x - 2 = 0


In each of the following, determine whether the given values are solution of the given equation or not:
2x2 - x + 9 = x2 + 4x + 3; x = 2, x = 3


Solve the following equation by factorization

`(8)/(x + 3) - (3)/(2 - x)` = 2


There are three consecutive positive integers such that the sum of the square of the first and the product of other two is 154. What are the integers?


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×