Question

x square 5 under root 5 x + 30​

Answer 1

Hello Friend

$x {}^{2} - 5 \sqrt{5} x + 30 = 0 \\ = > x {}^{2} + x(6 \sqrt{5} - \sqrt{5} ) + 30 = 0 \\ = > x {}^{2} + 6 \sqrt{5} x - \sqrt{5} x + 30 = 0 \\ = > x(x + 6 \sqrt{5} ) - \sqrt{5} (x + 6 \sqrt{5} ) = 0 \\ = > (x - \sqrt{5} )(x + 6 \sqrt{5} ) = 0 \\ = > x - \sqrt{5} = 0 \\ = > x = \sqrt{5} \\ or \\ = > x + 6 \sqrt{5} = 0 \\ = > x = - 6 \sqrt{5}$

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