Question

Find the positive value of x, for 1-x²/1+x²=-4/5

Answer 1

Step-by-step explanation:

1-x²/1+x²=4/5

1-x².5=1+x².4

5-5x²=4+4x²

-9x²=-1

9x²=1

x²=1/9

x=1/3