Search the courses, subjects, tracks, games and features, or jump straight to a page.
3 cards from this section. Quick, good the night before a test.
Complete the square: x² + 10x + 21.
Find half of 10, square it, then add and subtract it.
Complete the square: x² - 4x.
What do you get when you take half of -4?
What is the first step to complete the square for x² + 8x + 7?
What do you do with the coefficient of x?
True or False: Completing the square can only be done if a = 1.
Consider if you're able to start with any coefficient.
Complete the square for the expression x² + 12x + 36 and solve the resulting equation = 0.
Focus on half of 12 and remember to set your expression to zero afterwards.
Let h(t) = -4t² + 16t + 1. Find the time at which the maximum height occurs by completing the square.
Transform into vertex form and identify the vertex time.
5 more questions in this section. Enroll free to practise them all.
Enroll free