Revision (Grade 11 NSC Matric Mathematics): Quizzes

Value where $f(x) = 0$

$a$

If $a \times b = 0$, then $a = 0$ or $b = 0$

No real roots

Write in standard form $ax^2 + bx + c = 0$

$x = -3$ or $x = 7$

$y^2 - 7 = 0$

Squaring may introduce invalid solutions

$b ≠ -2$ and $b ≠ -1$

$ac$