Question

find the value of x in the quadratic equation 35x^2-2x-1=0

Answer 1

Answer:

x=1/5&x=-1/7

Step-by-step explanation:

35x2-7x+5x-1=0

7x(5x-1)+1(5x-1)=0

(5x-1) (7x+1)=0

5x-1=0

5x=1

x=1/5

7x+1=0

7x=-1

x=-1/7

I hope it Will be helpful for you

Answer 2

Answer :

x = 1/5 , -1/7

Solution :

• Given equation : 35x² - 2x - 1 = 0
• To find : x = ?

We have ;

=> 35x² - 2x - 1 = 0

=> 35x² - 7x + 5x - 1 = 0

=> 7x(5x - 1) + (5x - 1) = 0

=> (5x - 1)(7x + 1) = 0

=> Either (5x - 1) = 0 OR (7x + 1) = 0

Case1 : If 5x - 1 = 0

=> 5x - 1 = 0

=> 5x = 1

=> x = 1/5

Case2 : If 7x + 1 = 0

=> 7x + 1 = 0

=> 7x = -1

=> x = -1/7

Hence , x = 1/5 , -1/7 .