<span>1) (0,1-х)(х+0,1)=-(x-0.1)(x+0.1)=-(x²-0.01)=0.01-x²
2)</span><span> (1,2-а)(1,2+а)</span>=1.44-a²
3) <span> (1/3-m)(1/2m-3)</span>=-1/2m²+1/6m+3m-1=-1/2m²+19/6m-1=-1/6(3m²-19m+6)
1.
а)=3x^2/3(x+3)=x^2/x+3
b)=(x-3)(x+3)/(x+3)(x+3)=x-3/x+3
2.
a)2^-3=1/2^3=1/8
b)3^-4=1/3^4=1/81
v)(4/5)^-1=1/4,5
g)(0,5)^0=1
3.3x+5x=440
8x=440
x=55
3x=3*55=165
5x=5*55=275
165;275
4.3х+2 х=-2/3
9х-у=1 9*(-2/3)-y=1
-6-y=1
-y=7
y=-7
1) S=4πR²,
R²=S/4π;
R=√(S/4π)=√(100π/4π)=√25=5 (см).
Ответ: 5 см.
2)
Ответ: 4.
Ответ: 1; 4.
5a(3a-2b):b(3a-2b)=5a:b=-2*5:-0,1=10:0,1=1 вроде так
<span>а) 9^3/2+27^2/3-(1/16)^3/4 = </span>√(9^3) + ∛(27^2) - ⁴√(1/16)^3 = √(3^2)^3 + ∛(3^3)^2 - ⁴√(1/2^4)^3= 3^3 + 3^2 - (1/2)^3=27+9 - 1/8 = 36-1/8=35 7/8<span>
б) 27^1/3logз 8 = (3^3) ^ (1/3 log </span>₃ 8)= 3^log₃ 8 =8