Question

9x=-2x во второй степени-10
решите пж

Answer 1

9x=-2x²-10

2x²+9x+10=0

(x+2)(2x+5)=0

x = -2 или x = -2,5

Answer 2

$9x = - 2 {x}^{2} - 10 \ 2 {x}^{2} + 9x + 10 = 0 \ d = 81 - 4 times 2 times 10 = \ 81 - 80 = 1 \ x1 = frac{ - 9 - 1}{2 times 2} = - 2.5 \ x2 = frac{ - 9 + 1}{2 times 2} = - 2$