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Solve of the Following Equations, Giving Answer Upto Two Decimal Places. 3x2 – X – 7 =0 - Mathematics

Sum

Solve of the following equations, giving answer upto two decimal places.

3x2 – x – 7 =0

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Solution

3x2 – x – 7 =0

Here a = 3, b = -1 and c = -7

`x = (-b +- sqrt((-1)^2 - 4(3)(-7)))/(2(3))`

`=> x = (1 +- sqrt85)/6 = (1 +- 9.22)/6`

`=> x = 10.22/6 and (-8.22)/6 = 1.70  and -1.37`

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APPEARS IN

Selina Concise Maths Class 10 ICSE
Chapter 5 Quadratic Equations
Exercise 5 (E) | Q 12.2 | Page 67
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