Question

1) -х² +7 x - 10 =0
2) 2х²+4х=0
3) 5(х-2)=(3х+3)(х-2)
СРОЧНО​

Answer 1

1-x2 + 7x -10=0
X2 - 7x + 10 = 0
D=49-4•1•10=49-40=3
X1= 7 + 3 : 2=5
X2= 7-3:2=2
X1=5
X2=2