Выразите в кг - 72 г. 1) 0, 072 кг 2) 0, 72 кг 3) 0, 0072 кг 4)7, 2 кг

1)0.072 просто раздели на 1000

Ответ 1) т.к в 1 кг 1000 гр 72--------- =0.072 1000

  n4 1)=c³(ac+a-1)   3)=++120)=   -5x(y+3)-40(y+3)=   (y+-40)=-5(y+3)(x+8)     4)= (x³-x²y)+(x²-xy)= x²(x-y)+x(x-y)= (x-y)(x²+x)= x(x-y)(x+1)   n51)= (a²-b²-b)= (a-b)(a+-b)= (a-b)(a+b-1)   2)=(4m²-n²)+(4m-2n)=   =(2m-n)(2m+n)+2(2m-n)=(2m-n)(2m+n+2)     3)=(x²-y²+y)=(x-y)(x+-y)= (x-y)(x+y-1)     5)=(с²-d²)+(c+d)=(c+d)(c-d)+(c+d)=(c+d)(c-d+1)   n1)   1)=9(a²-1)=9(a-1)(a+1)   2)=2m(1-m²)=2m(1-m)(1+m)   3)=x²(1-x²)=x²(1-x)(1+x)     4)= y³(1-y²)=y³(1-y)(1+y)   5)m(x²-y²)=m(x+y)(x-y)   n2) 1)=(x²-1)(x^4+x²+1)=(x-1)(x+1)(x^4+x²+1)     2)=2(x³-8)=2(x-2)(x²+2x+4)

1)(1 11/25)^3x+6=(216/125)^4x-2

(36/25)^(3x +6) = (216/125)^(4x -2)

(6/5)^2(3x +6) = (6/5)^3(4x -2)

2(3x +6) = 3(4x -2)

6x +12 = 12x -6

6x = 18

x = 3

2) (25^3x-3)^2=27^x: 3^3

  25^6(x -1) = 27^(x -1)   | : 27^(x -1)

(25^6)^(x -1)/27^(x-1) = 1

(25^6/27)^(x -1) = 1

x -1 = 0

x = 1

3)(343/64)^2x-4=(3 1/16)^2x

(7/4)^3(2x -4) = (7/4)^4x

(7/4)^(6x -12) = (7/4)^4x | : (7/4)^4x

(7/4)^(2x -12) = 1

2x -12 = 0

x = 6

4)(16^x) * 3 =(3^2x) * 4 |: (3*4)

4^(2x-1) = 3^(2x-1) |: 3^(2x - 1)

(4/3)^(2x -1) = 1

2x -1 = 0

x = 1/2