Question

if tte sum of the square of the number and 4 times the number is 21,what is the number?​

Answer 1

Step-by-step explanation:

Let the number be x

4 times of no. = 4x

Now, ATQ,

x + 4x = 21

5x = 21

x= 21/5

x = 4.2

Or

x= 21/5

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