Question

(25-2x)³ :5 -3²=4²

Answer 1

(25 - 2x)³ : 5 - 3² = 4²

(25 - 2x)³ : 5 - 9 = 16

(25 - 2x)³ : 5 = 16 + 9

(25 - 2x)³ : 5 = 25

(25 - 2x)³ = 25 . 5

(25 - 2x)³ = 125

(25 - 2x)³ = 5³

=> 25 - 2^x = 5

2x = 25 - 5 = 20

x = 20 : 2 = 10

 

Answer 2

(25 - 2x)\(^3\):5 - 9 = 16

(25 - 2x)\(^3\):5=16 + 9

(25 - 2x)\(^3\):5=25

(25 - 2x)\(^3\)=25.5

(25 - 2x)\(^3\)= 125

(25 - 2x)\(^3\)=5\(^3\)

⇒25 - 2x =5

2x= 25-5

2x=20

x=10