Номер 332
(m+4)^2= m^2+8-16
(c-b)^2= c^2-2cb+b^2
(x+y)^2= x^2+2xy+y^2
(p+q)^2= p^2+2pq+q^2
(a-3)^2 = a^2-6a+9
(b+4)^2= b^2+8b+16
(-2-a)^2= 4-4a+a^2
9x^2 - 12x + 4 + 12x = 9x^2 + 4
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4х² + 9х = 0
х(4х+9) = 0
х = 0; х = -9/4
Ответ:(-2½; 0)
A)7x-4=x-16 б)13-5x=8-2x в)4y+15=6y+17
7x-x= -16+4 -5x+2x=8-13 4y-6y=17-15
6x= -12 -3x= -5 -2y=2
x= -12/6 x= -5/-3 y=2/-2
x= -2. x=5/3. y= -1.
г)1,3p-11=0,8p+5 д)0,71x-13=10-0,29x е)8c+0,73=4,61-8c
1,3p-0,8p=5+11 0,71x+0,29x=10+13 8c+8c=4,61-0,73
0,5p=16 x=23. 16c=3,88
p=16/0,5 c=3,88/16
p=32. c=0,2425.