Question

plzz slove the question.....​

Answer 1

Answer:

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

(x+3)*(x-3)/x+3=4/7

x-3=4/7

x=4/7 +3

x=25/7

x=3.571

Step-by-step explanation:

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Answer 2

x = 25/7

Step-by-step explanation:

$\rm\dashrightarrow \dfrac{x^2-9}{x+3}=\dfrac{4}{7}$

Cross multiplying,

$\rm\dashrightarrow 7(x^2-9)=4(x+3)$

• x² - 9 = (x)² - (3)² = (x - 3)(x + 3)

$\rm\dashrightarrow 7(x-3)(x+3)=4(x+3)$

x + 3 on both the sides gets cancelled,

$\rm\dashrightarrow 7(x-3)=4$

$\rm\dashrightarrow x - 3=\dfrac{4}{7}$

$\rm\dashrightarrow x=\dfrac{4}{7} + 3$

$\rm\dashrightarrow x=\dfrac{4+21}{7}$

$\bf\dashrightarrow x=\dfrac{25}{7}$