<span>1,2(b+1,2)+(0,5-b)(b+0,5)-(b+1,3)(1,3-b)=1,2b+1,44+(0,5-b)(0,5+b)-(1,3+b)(1,3-b)=1,2b+1,44+0,5b^2-b^2-(1,3^2-b^2)=1,2b+1,44+0,5^2-b^2-((13/10)^2-b^2)=1,2b+1,44+0,5^2-b^2-(13/10)^2+b^2=1,2b+36/25+(1/2)^2-169/100=1,2b+36/25+1/4-169/100=1,2b+0=1,2b
1,2b=1,2*(-5/6)=-1</span>
<span>7/(х-2)(х-3)+9x-18/х-3+1(x-2)=0
ODЗ: x NE PABNO 2, x NE PABNO 3
7+9x-18=0
9x=11
x=11/9</span>
<em> б) у - (4y + 5)=у-4у-5=-3у-5</em>
<em>ву- (4y + 5)=ву-4у-5</em>
A³+b³ = (a+b)(a²-ab+b²)
a³-b³ = (a-b)(a²+ab+b²)
0,064m³+1 = (0,4m)³+1³ = (0,4m+1)((0,4m)²-0,4*m+1²) =
= (0,4m+1)(0,16m²-0,4m+1)
0,027x³-y³ = (0,3x)³-y³ = (0,3x-y)((0,3x)²+0,3x*y+y²) =
= (0,3x-y)(0,09x²+0,3xy+y²)
p⁶+8 = (p²)³+2³ = (p²+2)((p²)²-p²*2+2²) = (p²+2)(p⁴-2p²+4)
27-m⁶ = 3³-(m²)³ = (3-m²)(3²+3*m²+(m²)²) = (3-m²)(9+3m²+m⁴)