Back to Equation of a circle (standard form, completing the square) — Problem 3 · Task Set 8
Equation of a Circle — Practice Set
Grade 10·21 problems·~40 min·Digital SAT Math·topic·sat-geotrig-circ-eq
Work through problems with immediate feedback
A
Recall / Warm-Up
1.
To complete the square on : take half of , which is ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ , then square it to get ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ .
Add this to get (x - \\_\\_\\_)^2.
half coefficient:
square of half:
value in factored form: