Question

1) 4,5*5,4-6,1
2) x^2+2x-24=0

Answer 1

Ответ:

1)4,5*5,4-6,1=18,2

2)x^2+2x-24=0

D=b²-4ac, D=2²-4*1*(-24) = 100=√100=10

x=-b±D/2a, x1=-2-10/2=-6; x2=-2+10/2=4

x1=-6;

x1=-6;x2=4

Answer 2

Пошаговое объяснение:

$4.5 \times 5.4 - 6.1 = 18.2 \\ 1)4.5 \times 5.4 = 24.3 \\ 2)24.3 - 6.1 = 18.2$

${x}^{2} + 2x - 24 = 0 \\ x(x + 6) - 4(x + 6) = 0 \\ (x + 6)(x - 4) = 0 \\ \\ x + 6 = 0 \\ x - 4 = 0 \\ \\ x = - 6 \\ x = 4$