Question

If 3x - 5y -
-
3x + 5y
11
then evaluate
3x2 - 5y2
3x² + 5y2
+
2​

Answer 1

Answer:

(3x - 5y)/(3x + 5y) = 1/2

<br> or ,

6x - 10y = 3x + 5y

<br> or,

6x - 3x = 5y + 10y

<br> or,

3x = 15y

<br> or,

x = (15y)/3 " or, " x = 5y

<br>

:.

Given quantity

= (3x^(2) - 5y^(2))/(3x^(2) + 5y^(2))

<br>

= (3 xx (5y)^(2) - 5y^(2))/(3 xx (5y)^(2) + 5y(2))

<br>

= (75y^(2) - 5y^(2))/(75y^(2) + 5y^(2)) = (70y^(2))/(80y^(2)) = 7/8

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Answer 2

Answer:

when you solve this so you get

x=5