Question

find the roots of the following quadratic equation using factorisation.
10x-1/x-3=0​

Answer 1

Step-by-step explanation:

1

Secondary School Math 5 points

10x-1/x=3... quadratic equation

Ask for details Follow Report by Hshaw519 25.06.2018

Answers

Shubhendu8898

Shubhendu8898 Genius

Given,

10x - 1/x=3

(10x² -1)/x= 3. (take LCM)

10x²-1= 3x. (cross multiplication)

10x²-3x-1=0

10x² +2x -5x -1= 0

2x(5x+1) -1(5x+1)=0.

(5x+1) (2x-1)=0

So,

2x-1= 0

x=1/2

or ,

5x+1=0

x= -1/5

Hence,,

x=1/2 or (-1/5).

Answer 2

Answer:

10x-1/x-3=0

》10x^2-1-3x=0

》10x^2-3x-1=0

》10x^2-(5-2)x-1=0

》10x^2-5x+2x-1=0

》5x(2x-1)+1(2x-1)=0

》(2x-1)(5x+1)=0

》2x-1=0 or 》5x+1=0

》x=1/2,-1/5

HOPE IT HELPS YOU