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what the real solution using quadratic formula ,5x^2-12x+7=0

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what the real solution using quadratic formula 5x^2-12x+7=0.

asked Feb 17, 2014 in ALGEBRA 2 by chrisgirl Apprentice

1 Answer

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Given equation 5x^2-12x+7 = 0

Compare it to quadratic form ax^2+bx+c = 0

a = 5, b = -12, c = 7

Roots are x = [-b±√(b^2-4ac)]/2a

x = [12±√(144-140)]/10

x = [12±√4]/10

x = (12±2)/10

x = (12+2)/10 and x = (12-2)/10

x = 14/10 and x = 10/10

x = 7/5 and x = 1

Real solutions x = 7/5 and 1.

 

answered Feb 17, 2014 by ashokavf Scholar

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