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Solve Each of the Following Equations Using the Formula: 3x^2 + 2x – 1 = 0 - Mathematics

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Question

Solve each of the following equations using the formula: 

`3x^2 + 2x – 1 = 0`

Solution

`3x^2 + 2x – 1 = 0`
Here a = 3, b = 2 and c = −1  

Then `x = (-b+-sqrt(b^2-4ac))/(2a)` 

=`(-(2)+-sqrt((2)^2-4(3)(1)))/(2(3)` 

=`(-2+-4)/6=(-2+-4)/6 and (-2-4)/6=1/3 and -1`

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APPEARS IN

 Selina Solution for Concise Mathematics for Class 10 ICSE (2020 (Latest))
Chapter 5: Quadratic Equations
Exercise 5(D) | Q: 1.05 | Page no. 64
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Solve Each of the Following Equations Using the Formula: 3x^2 + 2x – 1 = 0 Concept: Quadratic Equations.
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