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Update Unit 2: Quadratic Equations 1.md

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James Su 2020-01-13 15:09:18 +00:00
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Grade 10/Math/MPM2DZ/Math Oral Presentation Questions/Unit 2: Quadratic Equations 1.md
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@ -33,11 +33,11 @@ $`b = \dfrac{-2 \pm \sqrt{4+4(168)}}{2}`$
$`b = \dfrac{-2 \pm 26}{2}`$
$`b = -1 \pm 26 \implies b = 25, -27`$
$`b = -1 \pm 13 \implies b = 12, -14`$
$`\because b \gt 0 `$
$`\therefore b = 25cm`$
$`\therefore b = 12cm`$
### Question 2 a)