This page Samacheer Kalvi Math Solution for Exercise 3.13 is going to provide you solution for every problems that you find in the exercise no 3.15
(1) Solve the following quadratic equations by completing the square.
(i) x² + 6 x - 7 = 0 Solution
(ii) x² + 3 x + 1 = 0 Solution
(iii) 2 x² + 5 x - 3 = 0 Solution
(iv) 4 x² + 4 b x - (a² - b²) = 0 Solution
(v) x² - ( √3 + 1) x + √3 = 0 Solution
(vi) (5 x + 7)/(x - 1) = 3 x + 2 Solution
(2) Solve the following quadratic equations using quadratic formula
(i) x²- 7x + 12 = 0 Solution
(ii) 15x²- 11 x + 2 = 0 Solution
(iii) x + (1/x) = 2 ½ Solution
(iv) 3 a²x² - ab x - 2b² = 0 Solution
(v) a (x² + 1) = x(a² + 1) Solution
(vi) 36 x² - 12 a x + (a² - b²) = 0 Solution
(vii) [(x - 1)/(x + 1)] + [(x - 3)/(x - 4)] = 10/3 Solution
(viii) a² x² + (a²- b²)x - b²= 0 Solution
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