Question

Thrice the square of a natural number decreased by 4 times the number is equal to 50 more than the number. The number is ?
A) 5
B) 4
C) 7
D) 6

Answer 1

Q:

Thrice the square of a natural number decreased by 4 times the number is equal to 50 more than the number. The number is  ?

A) 5
B) 4
C) 7
D) 6

Answer:   A) 5 

Explanation:

Let the number be x. Then,
 
3x^2 - 4x = x + 50
 
3x^2- 5x - 50 = 0
 
(3x + 10)(x - 5) = 0
 
x = 5

Answer 2

Heyy mate ❤✌✌❤

Here's your Answer ......

⤵️⤵️⤵️⤵️

Let the number be x. Then,

3x^2 - 4x = x + 50
 
3x^2 - 5x - 50= 0

(3x + 10)(x - 5) = 0

x = 5
✔✔