Question

If ((x²-9)/(x²+3)) = 4/7 , then x is:​

Answer 1

Answer:

hope it is helpful to you

Answer 2

Answer:

x = 5

Step-by-step explanation:

$\frac{x^{2} -9}{x^{2} +3} = \frac{4}{7}$

$7(x^{2} -9) = 4(x^{2} +3)$

$7x^{2} - 63 = 4x^{2} + 12$

$3x^{2} = 63 + 12$

$x^{2} = \frac{75}{3} = 25$

$x = \sqrt{25} = 5$