diff --git a/Grade 10/Math/MPM2DZ/Math Oral Presentation Questions/Unit 2: Quadratic Equations 2.md b/Grade 10/Math/MPM2DZ/Math Oral Presentation Questions/Unit 2: Quadratic Equations 2.md
index 3da9769..2c37afb 100644
--- a/Grade 10/Math/MPM2DZ/Math Oral Presentation Questions/Unit 2: Quadratic Equations 2.md	
+++ b/Grade 10/Math/MPM2DZ/Math Oral Presentation Questions/Unit 2: Quadratic Equations 2.md	
@@ -32,11 +32,10 @@ When $`h = 0`$, the ball hits ground, so:
 
 $`-3.2t^2 + 12.8 + 1 = 0`$
 
-$`t = \dfrac{12.8 \pm \sqrt{151.04}}{6.4}`$
+$`t = \dfrac{12.8 \pm \sqrt{176.64}}{6.4}`$
 
 $`\because t \ge 0`$
 
-$`\therefore t = \dfrac{12.8 \pm \sqrt{176.64}}{6.4}`$
 
 $`\therefore t \approx 4.1`$