Question

Ten times the square root of a nonzero number is equal to forty times the number

Answer 1

hello :
let : x this number
10√x = 40 x ..... x > 0
√x = 4 x and : x > 0
(√x )²= (4 x)² and : x > 0
x = 16 x² ....x > 0 : i'can simplifiy by : x
1 =16x
x = 1/16