when three times a number which is positive is subtracted from the square of that number the answer is 28.find the number??

1.94

Step-by-step explanation:

Let the number be x

So when three times a number which is positive which means when a number is x so three times a number must be 3x is subtracted from the square of that number ,

now the number 3x is subtracted from its own square i guess it should look like this

and the answer is 28 so the final form of the problem should be

now we solve the quadratic equation by using the quadratic formula and we two values for x

one is a positive value and the other is negative value we take the positive value as said in the question itself  "when three times a number which is positive" so that value of x is 1.94

-7/8

step-by-step explanation:

instead of subtracting you add the -6/8 and -1/8