Question

4y^2 - 9y - 4 = 0
find the value of x​

Answer 1

Answer:

y= 1 or 5/4

Step-by-step explanation:

According to the Quadratic Formula, Ay2+By+C = 0:

- B ± √ B2-4AC

y = ————————

2A

A = 4

B = -9

C = 5

B2 - 4AC =

81 - 80 = 1

Applying the quadratic formula :

9 ± √ 1

y = ————

8

So now we are looking at:

y = ( 9 ± 1) / 8

Two real solutions:

y =(9+√1)/8= 1.250

or:

y =(9-√1)/8= 1.000

Two solutions were found :

(i) y = 1

(ii) y = 5/4 = 1.250

hope this helps you ✌