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0,7√100*3=0,7*10√3=7√3
-0,123√192=-0,123√81*2√=-0,123*9√2=-1,107√2
-1/3√225*2=-1/3*15√2=-5√2
б)
b₁ = 16√2
q = -√2/2
bₙ = b₁ * qⁿ⁻¹ = 16√2 * (-√2/2)ⁿ⁻¹
b₅ = 16√2 * (√2/2)⁴ = 16√2 * 1/4 = 4√2
г)
b₁ = -√3/3
q = -√3
bₙ = b₁ * qⁿ⁻¹ = -√3/3 * (-√3)ⁿ⁻¹
b₅ = -√3/3 * (-√3)⁴ = -√3/3 * 9 = -3√3
1)(b+a) (b-a)²=(b+a)(b²-2ba+a²)=b³-2b²a+ba²+ab²-2ba²+a³=b³-b²a-a²b+a³
2)<span>(x+y)² (y-x)=(x</span>²+2xy+y²)(y-x)=x²y+2xy²+y³-x³-2x²y-xy²=y³-x²y+xy²-x³
(6b-b) +(5x-3x-2x) + (y-2y) + (5-18) = 5b -y-13