Question

thrice the square of a nature number decreased by 4 times the number is equal to 50 more then the number. the number is?​

Answer 1

Answer:

5

Explanation:

let the natural number be x.

Then according to the given condition

3x^2- 4x = 50+x

3x^2 - 5x - 50=0

3x^2 - 15x + 10x-50 = 0

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

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

therefore,x = -10\3 and x= 5

since ,x is given to be natural number so x=5