Ответ:
х = -5
Объяснение:
-5x - 2 + 4(x+1) = 4(-3-x) - 1
-5x - 2 + 4x + 4 = -12 - 4х - 1
-5x + 4x + 4х = -12 - 1 +2 - 4
-5х + 8х = -15
3х = -15
х = -15 : 3
х = -5
Проверка:
-5* (-5) - 2 + 4(-5+1) = 4(-3-(-5)) - 1
25 - 2 + 4*(-4) = 4* 2 - 1
23 - 16 = 8 - 1
7 = 7
1)10x= -5 x=-2
2)-18x=4 x=-4,5
3)9x+2-18x=-2x-8 -7x=-10 x=0.7
4)6x^2=-18 x^2=3
N2 a) 3^4-(-1)^4=81-1=80
b)(-3,3)^3-0,027=(-10/3)^3-27/1000=-1000/27-27/1000=-1000729/27000
v) (-7^2)×(-2/7)^2=-(7×2/7)^2=-2^4=-4
a) 2^2-(-3)^2=4-9=-5
b)(-2,5)^3×0,064=-(5/2)^3×(2/5)^3=-(5/2×2/5)^3=-1^3=-1
v)(-5^1)×(-2/5)^4=(-5)×(2/5)^4=-5×16/625=-0,128
<em>(x+2)²=1,44</em>
<em>Iх+2I=1.2; х+2=1.2⇒</em><em>х=-0.8</em>
<em>х+2=-1.2;⇒</em><em>х=-3.2</em>
2/3; 3/5; 4/7; 5/9; 6/11; 7/13; 8/15; 9/17; 10/19 и так до бесконечности