Global Statistics

All countries
246,070,236
Confirmed
Updated on October 28, 2021 5:59 pm
All countries
221,244,522
Recovered
Updated on October 28, 2021 5:59 pm
All countries
4,992,552
Deaths
Updated on October 28, 2021 5:59 pm

Thrice the Square of a Natural Number Decreased by 4 Times the Number is Equal to 50 more than the Number. The Number is?

What are you looking for? Let’s dig in quickly

Explanation

  • Thrice the square of a natural number decreased by 4 times the number.
  • Is equal to 50 more than the number.

The number can be figure out in this way.

Let suppose the number is y.

Thrice the square of “y” decreased by 4y

3y2 – 4y

3y2 – 4y is equal to 50 more than the number

3y2 – 4y = y + 50 ________ (i)

Through equation (i) we can easily find out the value of y (y = 5).

To Find

Number = ?

Solution

Let suppose

Number = y

According to the given condition

3y2 – 4y = y + 50

3y2 – 4y – y – 50 = 0

3y2 – 5y – 50 = 0

3y2 – 15y + 10y – 50 = 0

3y(y – 5) + 10(y – 5) = 0

(3y + 10)(y – 5) = 0

3y + 10 = 0                   &                y – 5 = 0

y = -10/3 (not possible)                 &                y = 5 (possible)

Required Number = 5 answer

Conclusion

Thrice the square of a natural number decreased by 4 times, the number is equal to 50 more than the number. The number is 5.

LEAVE A REPLY

Please enter your comment!
Please enter your name here

Hot Topics

Related Articles

error: Content is protected !!