# Samacheer Kalvi Math Solution for Exercise 3.15

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

## Samacheer Kalvi Math Solution for Exercise 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

(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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