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प्रश्न
Solve the following quadratic equation using formula method only
5x2 - 19x + 17 = 0
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उत्तर
5x2 - 19x + 17 = 0
a = 5 ; b = -19 ; c = 17
D = b2 - 4ac
= (-19)2 - 4(5)(17)
= 361 - 340
= 21
x = `(- "b" ± sqrt ("b"^2 - 4 "ac"))/(2a)`
x = `(19 +- sqrt 21)/10`
x = `(19 + sqrt 21)/10` , x = `(19 - sqrt 21)/10`
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