Question

помогите пж.
заранее спасибо

Answer 1

1.
${x}^{2} - 26x + 25 = 0 \ {x}^{2} - x - 25x + 25 = 0 \ (x - 1) times (x - 25) = 0 \ x - 1 = 0 \ x - 25 = 0 \ x 1 = 1 \ x2 = 25$

2.
${x}^{2} + 24x - 25 = 0 \ x times (x + 25) - (x + 25) = 0 \ (x + 25) times (x - 1) = 0 \ x + 25 = 0 \ x - 1 = 0 \ x = - 25 \ x = 1 \ x1 = - 25 \ x2 = 1$
3.
${x}^{2} + 8x + 6 = 0 \ x1 = - 4 - sqrt{10} \ x2 = - 4 + sqrt{10}$

4.
${x}^{2} - 7x + 10 = 0 \ {x}^{2} - 2x - 5x + 10 = 0 \ x times (x - 2) - 5 times (x - 2) = 0 \ (x - 2) times (x - 5) = 0 \ x - 2 = 0 \ x - 5 = 0 \ x1 = 2 \ x2 = 5$
5. там через дискриминат,не думаю,что вы ещё такое изучали