Bytelearn - cat image with glassesAI tutor

Welcome to Bytelearn!

Let’s check out your problem:

Complete the square to re-write the quadratic function in vertex form:

y=x^(2)-x-7
Answer: 
y=

Complete the square to re-write the quadratic function in vertex form:\newliney=x2x7 y=x^{2}-x-7 \newlineAnswer: y= y=

Full solution

Q. Complete the square to re-write the quadratic function in vertex form:\newliney=x2x7 y=x^{2}-x-7 \newlineAnswer: y= y=
  1. Focus on x-terms: To complete the square and rewrite the quadratic function in vertex form, we first need to focus on the x-terms. The vertex form of a quadratic function is y=a(xh)2+ky = a(x-h)^2 + k, where (h,k)(h, k) is the vertex of the parabola. We will manipulate the given function to match this form.
  2. Find completing square value: The coefficient of x2x^2 is 11, which is already in the form we need. We will now take the coefficient of xx, which is 1-1, divide it by 22, and square it to find the value that completes the square.\newline(12)2=14\left(-\frac{1}{2}\right)^2 = \frac{1}{4}
  3. Add/subtract to complete square: We add and subtract this value inside the parentheses to complete the square, making sure the equation remains balanced.\newliney=x2x+(14)(14)7y = x^2 - x + \left(\frac{1}{4}\right) - \left(\frac{1}{4}\right) - 7
  4. Rewrite equation with grouping: Now we can rewrite the equation grouping the xx-terms and the constant that completes the square, and moving the other constants outside the parentheses.\newliney=(x2x+14)147y = (x^2 - x + \frac{1}{4}) - \frac{1}{4} - 7
  5. Factor perfect square trinomial: The expression inside the parentheses is now a perfect square trinomial, which can be factored into (x12)2(x - \frac{1}{2})^2.\newliney = (x12)2147(x - \frac{1}{2})^2 - \frac{1}{4} - 7
  6. Combine constants to simplify: Combine the constants 14-\frac{1}{4} and 7-7 to simplify the equation. Since 7-7 is equivalent to 284-\frac{28}{4}, we have:\newliney=(x12)214284y = (x - \frac{1}{2})^2 - \frac{1}{4} - \frac{28}{4}\newliney=(x12)2294y = (x - \frac{1}{2})^2 - \frac{29}{4}
  7. Quadratic function in vertex form: The quadratic function is now in vertex form, with the vertex being the point (h,k)=(12,294)(h, k) = (\frac{1}{2}, -\frac{29}{4}).

More problems from Csc, sec, and cot of special angles