Question

2xквадрате +7x -9=0 решить уравнение

Answer 1

Д=49+72=121
Х=-7+11):4=1
Х=-18/4=-4 1/2

Answer 2

3Xквадрате=18X

Answer 3

HTISNM

Answer 4

Х(3х-18)=0. Х=0 и 3х=18. Х=6

Answer 5

100Xквадрате-16=0

Answer 6

(10х-4)(10х+4)=0. 10х=4. Х=4/10и х=-4/10

Answer 7

2x^2 + 7x - 9 = 0
D = 49 + 72 = 121
X1 = -7 -11/4 = -4,5
X2 = -7 + 11/4 = 1
Ответ: -4,5; 1