Question 825039: If a number multiplied by 8 and then increased by 5 is 20 more than the square of the number. What is the number? Found 2 solutions by phoihe001, y6n3o9p4:Answer by phoihe001(34) (Show Source):
You can put this solution on YOUR website! Here's another way to write this: (x is the unknown number)
First subtract the right side from the equation, therefore moving it to the left side.
Combine like terms.
This is a quadratic equation, which can be solved using the quadratic formula:
Enter the values into the formula and simplify until you have your answer.
This problem has two possible solutions.
Solution 1:
Solution 2:
The number is 3 or 5.
