O-Level E-Maths Equations and Inequalities quiz (SEAB 4052) quiz

$x = 6$

$x = 4$

$x = \dfrac{4}{3}$

$x = 18$

$x = 5$

$x = 6$

$x = 30$

$x = 1$

$x = 2, y = 3$

$x = 1, y = 3$

$x = 3, y = 1$

$x = 3, y = -1$

$x < 4$

$x > -4$

$x > 4$

$x < -4$

$-2, -1, 0, 1, 2$

$-2, -1, 0, 1, 2, 3$

$-1, 0, 1, 2$

$-1, 0, 1, 2, 3$

$x = 3$ or $x = 4$

$x = -3$ or $x = -4$

$x = 2$ or $x = 6$

$x = 1$ or $x = 12$

$x = 4$ only

$x = 0$ or $x = 4$

$x = 0$ or $x = 2$

$x = 16$

$x = -3$ or $x = -2$

$x = 0.76$ or $x = 5.24$

$x = -0.76$ or $x = -5.24$

$x = -0.76$ or $x = 5.24$

$(x+3)^2 - 14$

$(x+3)^2 + 5$

$(x+6)^2 - 31$

$(x+3)^2 - 4$

Minimum $-4$ at $x = -3$

Minimum $-4$ at $x = 3$

Minimum $4$ at $x = -3$

Minimum $-3$ at $x = -4$

Reverse the inequality sign

Keep the inequality sign the same

Change the inequality to an equals sign

Square both sides

$2x + 5 = 17$, so $x = 11$

$2x + 5 = 17$, so $x = 6$

$2(x + 5) = 17$, so $x = 3.5$

$x + 5 = 17$, so $x = 12$

$2w + 3 = 40$

$w + (w+3) = 40$

$w(w + 3) = 40$

$w^2 + 3 = 40$

$x = 81$

$x = 3$ only

$x = 9$ or $x = -9$

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