Question

if 2x+1/9x=2/9 then show that 81x^2+1/4x^2​

Answer 1

Answer:

2x+1/9x=2/9

18x^2+1=2x

18x^2/2x+1/2x=1

9x+1/2x=1

(9x+1/2x)^2=1

81x^2+1/4x^2+2.81 x.1/2x=1

81x^2+1/4x^2+81=1

81x^2+1/4x^2= -80

Answer 2

Answer:

i thought 81.25 x power 2