Penyelesaian dri 9R+90=R^2 ?

By Admin ReiPosted on December 6, 2022

Penyelesaian dri 9R+90=R^2 ?

9R+90=R^2
-R^2+9R+90=0
R^2-9R-90=0
(R-15) (R+6)
R=15 R= -6

9R + 90 = $R^{2}$
$sqrt{9R + 90} = R 3 sqrt{R} + 3 sqrt{10} = R$

jadi :
$R = 3 sqrt{R} + 3 sqrt{10}$