Question

2 x square - 5 x-7=0
​

Answer 1

Answer:

$2 \times \sqrt{ - 5} \times - 7 = 0 \\ 2 \times \sqrt{5} \times 7 = 0 \\ \sqrt{10} \times 7 = 0 \\ \sqrt{70} = 0 \\ or \\ \sqrt{70}$

I hope it help you if it correct follow me and like the answer and mark me brainlest

Answer 2

Answer:

$2x ^{2} - 5x - 7 = 0 \\ \\ = > 2x ^{2} - (7 - 2)x - 7 = 0 \\ \\ = > 2x ^{2} - 7x + 2x - 7 = 0 \\ \\ = > x(2x - 7) + 1(2x - 7) = 0 \\ \\ = > (2x - 7)(x + 1) = 0 \\ \\ either \: 2x - 7 = 0 \\ \\ = > 2x = 7 \\ \\ = > x = \frac{7}{2} \\ \\ or \: x + 1 = 0 \\ \\ = > x = - 1$

hope it helps uH ✅