Practicing Success
If the sum of a number and its square is 272, What is the number?
|
14 19 21 16 |
16 |
Let the number be x: According to the question: x + x2 = 272 In the questions where quadratic equations are formed, it is always advised to solve the equations with the help of options. Putting 16 in the equation: 16 + 162 = 272 16 + 256 = 272 272 = 272 As, this option satisfies the equation, thus, is the correct answer. All the other options will not satisfy the given equation. |