Question

solve completing square method

Answer 1

here is your answer

hope this will help you

Answer 2

Answer:

Step-by-step explanation:

$| \ \ \ x^2 + 3x - 1 = 0 \\ \\| \ \ \ x^2 + 3x = 1 \\ \\ | \ \ \ x^2 + 3x + 2.25 = 1 + 2.25 \\ \\ = (x + 1.5)^2 = 3.25$

$\\ \\ | \ \ \ x + 1.5 = \sqrt{3.25} \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ OR \ \ \ \ \ \ \ \ \ \ \ \ \ x + 1.5 = -\sqrt{3.25} \\ \\ = \ x + 1.5 = \sqrt{0.25 \times 13} \ \ \ \ \ \ \ \ \ \ \ \ OR \ \ \ \ \ \ \ \ \ = x + 1.5 = -\sqrt{0.25 \times 13} \\ \\ = \ x + 1.5 = 0.5\sqrt{13} \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ OR \ \ \ \ \ \ \ \ \ = x + 1.5 = - \ 0.5\sqrt{13} \\ \\ | \ \ \ x = 0.5\sqrt{13} - 1.5 \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ OR \ \ \ \ \ \ \ \ \ \ \ \ \ x = - \ 0.5\sqrt{13} - 1.5$

$\\ \\ = \ x = 0.5 \ (\sqrt{13} - 3) \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ OR \ \ \ \ \ \ \ \ \ \ \ \ \ = \ x = 0.5 \ (- \sqrt{13} - 3) \\ \\ = \ x = \frac{\sqrt{13} - 3}{2} \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ OR \ \ \ \ \ \ \ \ \ \ \ \ \ \ = \ x = \frac{- \sqrt{13} - 3}{2}$