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Solve the Following Quadratic Equation Using Formula Method Only - Mathematics

Sum

Solve the following quadratic equation using formula method only :

 x2 +10x- 8= 0 

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Solution

 x2 +10x- 8= 0 

a = 1 ; b = 10 , c = - 8

D = b2 - 4ac

= (10)2 - 4(1)(-8)

= 100 + 32

= 132

x = `(- "b" ± sqrt ("b"^2 - 4 "ac"))/(2a)`

x = `(- 10 ± sqrt 132)/2`

x = `-10/2 ±  sqrt (132/4)`

x = `- 5 + sqrt 33 ,   x = -5 - sqrt 33`

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APPEARS IN

Frank ICSE Class 10 Mathematics Part 2
Chapter 6 Quadratic Equations
Exercise 6.2 | Q 3.02
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