Answered

Westonci.ca is the best place to get answers to your questions, provided by a community of experienced and knowledgeable experts. Get detailed answers to your questions from a community of experts dedicated to providing accurate information. Our platform offers a seamless experience for finding reliable answers from a network of knowledgeable professionals.

If using the method of completing the square to solve the quadratic equation x^2-18x-2=0x 2 −18x−2=0, which number would have to be added to "complete the square"?

Sagot :

raphealnwobi

The steps taken to complete the square is:

x² - 18x - 2 + 2= 0 + 2

x² - 18x = 2

x² - 18x + 81= 2 + 81

(x - 9)² = 83

x - 9 = ±√83

x = 9 + √83 or x = 9 - √83

A quadratic equation is a polynomial of degree 2. The standard form of a quadratic equation is given by:

ax² + bx + c = 0

Where a,b and c are constants

A quadratic equation always has two solutions.

Given the quadratic equation x² - 18x - 2 = 0, the steps below are used to solve the equation using completing the square method:

x² - 18x - 2 = 0

Add 2 to both sides

x² - 18x - 2 + 2= 0 + 2

x² - 18x = 2

Add to both sides the square of half of the coefficient of x (that is 81)

x² - 18x + 81= 2 + 81

(x - 9)² = 83

x - 9 = ±√83

x = 9 + √83 or x = 9 - √83

Find out more at: https://brainly.com/question/16239160

Thank you for your visit. We're committed to providing you with the best information available. Return anytime for more. Thank you for your visit. We're committed to providing you with the best information available. Return anytime for more. Get the answers you need at Westonci.ca. Stay informed by returning for our latest expert advice.