= A^2 + 12A + 36 - 2A*(9 - 12A + 4A^2) = A^2 + 12A + 36 - 18A + 24A^2 - 8A^3 =
1.a)(1/3)ˣ=9;⇒
3⁻ˣ=3²;
-x=2;⇒x=-2;
б)2²ˣ⁻⁷=8;
2²ˣ⁻⁷=2³;
2x-7=3;
2x=10;x=5;
в)log₂x=3;
x=2³=8;
г)log¹/₂(3x+1)=-2;(3x+1)>0;x>-1/3;
(1/2)⁻²=(3x+1);
3x+1=4;
3x=3;x=1;
2.а)3ˣ⁺¹ -3ˣ=18;
3·3ˣ-3ˣ=18;
2·3ˣ=18;
3ˣ=18/2=9=3²;
x=2;
б)log₂x+log₄x=6;
log₂x+1/2·log₂x=6;
3/2log₂x=6;
log₂x=6:(3/2)=4;
x=2⁴=16;
в)log₁/₃(log₃x)=-1;
-log₃(log₃x)=-1;
log₃(log₃x)=1;
log₃x=3;
x=3³=27;
1)(49с^2*11) в корене
2) -корень(81с^2*5)
3) корень(c^6*5c)
4) - корень(c^2*5c)
4-5(6x-6)<span><54-40x
4-30x+30</span><span><54-40x
-30x+40x</span><span><54-30-4
10x</span><span><20
x</span><span><10
(-</span>∞;10)