Completing the Square (AQA A-Level Mathematics): Quizzes

A squared bracket

$x^2 + 8x + 16$

$(x + 5)^2 - 25$

$(x + 7)^2 - 54$

$(x + \frac{5}{2})^2 - \frac{25}{4}$

Factor out 3: $3(x^2 + 6x) - 2$

$2(x + 2)^2 - 7$

$-(x - 4)^2 + 13$

$(5, 7)$

$x = -3$