Question

factorize 2x²- (underoot)7x-7
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Answer 1

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$\begin{gathered}2 {x}^{2} + \sqrt{7} x - 7 = 0 \\ 2 {x}^{2} + 2 \sqrt{7} x - \sqrt{7} x - 7 = 0 \\ 2x(x + \sqrt{7} ) - \sqrt{7} (x + \sqrt{7} ) = 0 \\ (2x - \sqrt{7} )(x + \sqrt{7} ) = 0 \\ x = \frac{ \sqrt{7} }{2} \\ x = - \sqrt{7} \end{gathered}$

Answer 2

Answer:

x=-root 7

Step-by-step explanation: