HELP ASAP NOW the sum of the number, its square root and ots square is 1338. what is the sum of the digits of the number
1 answer:
The solution is x = 36, and the sum of the digits is 3 + 6 = 9.
<h3>How to find the value of the number?</h3>
We know that, if we define x as the number, we have:
x + x^2 + √x = 1338
Now we need to find the value of x.
Trivially, we can graph the function:
y = x + x^2 + √x
We can see that the solution of x + x^2 + √x = 1338 is
x = 36
36 + 36^2 + √36 = 1338
Then the sum of the digits of the number is 3 + 6 = 9
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<h2>Hello!</h2>
The answers are:
B.
C.
We can use the quadratic equation to find the two values of x that are roots of the given equation. We must remember that most of the quadratic equations have two roots, however, we could find quadratic equations with just one root or even with no roots, at least in the real numbers.
Quadratic equation:
So,
From the given equation we have:
Substituting it into the quadratic equation to find the roots, we have:
So,
Hence, the correct options are B and C.