solve x : x^2-9/x+3 = 4/7
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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
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