Question

solve x : x^2-9/x+3 = 4/7​

Answer 1

Answer:

x = -3 or x = 25/7

Step-by-step explanation:

Given problem is : ( x² - 9) / (x + 3) = 4 /7

Cross multiply the terms:

7 x² - 7*9 = 4x + 4*3

7 x² - 4 x - 75 = 0

7 * 3 * 5 * 5 = 21 * 25 difference is 4

7 x² - 25 x + 21 x - 75 = 0

x (7x - 25) + 3 (7 x - 25) = 0

(x + 3) (7 x - 25) = 0

x = -3 or x = 25/7