solve using formula :
x²-3x-2=0
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Answer:
Step-by-step explanation:
Given that,
x² - 3x - 2 = 0
Comparing the given equation with ax²+bx +c =0,-we have
a = 1 , b = - 3 and c = - 2
∴Discriminant = b² - 4ac = (- 3 )² - 4 (1)(- 2)= 9 + 8 = 17
x = - b ± vb² - 4ac/ 2a
= - ( - 3 ) ÷√ 17 / 2
= 3 ± √17 / 2 is the answer
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