СИТУАЦИЯ SOS ПОМОГИТЕ!!!

Ответ:

1. 10

2. $\frac{3}{4} ; 1$

Объяснение:

1. $\frac{\sqrt{30} * 5 \sqrt{2} }{\sqrt{15} } = \frac{5\sqrt{60} }{\sqrt{15} } = 5\sqrt{4} = 5*2=10$

a = 4; b = -7; c = 3

D = b^{2} - 4acD = (-7)^{2} - 4 * 4 * 3 = 49 - 48 = 1 > 0," alt="4x^{2} - 7x + 3 - 0

a = 4; b = -7; c = 3

D = b^{2} - 4acD = (-7)^{2} - 4 * 4 * 3 = 49 - 48 = 1 > 0," align="absmiddle" class="latex-formula"> уравнение имеет 2 корня

x1,2 = -b ± √D/2a

$x_{1} = \frac{7+\sqrt{1} }{2*4} = \frac{7+1}{8} = \frac{8}{8} = 1$

$x_{2} = \frac{7-\sqrt{1} }{2*4} = \frac{7-1}{8} = \frac{6}{8} = \frac{3}{4}$