2)-y^6/27
3)x^8y^4/16
1. 24x^4y^3/8x^3y^3=3x
2. 4a^4c^10/(-4a^2c^3)=-a^2c^7
3. x^6y^2/x^9y^9=1/x^3y^7
^ - степень
Это просто
log8 (8^(-3)) = -3
log3 (1/27) = log3 (3^(-3)) = -3
lg 0,0001 = lg (10^(-4)) = -4
log√7 (49) =
log√7
((√7)^4) = 4
log3/2 (64/729) =
log3/2
(2^6/3^6) =
log3/2
((2/3)^6) = -6
log9 x = 1/2; x = 9^(1/2) = √9 = 3
log0,027 x = 2/3; x = (0,0027)^(2/3) = ((0,3)^3)^(2/3) = (0,3)^2 = 0,09
=x^2+2xy+y^2
вроде так
но это обычная формула квадратов
<span>(a⁴-1)²-(a⁴+4)-(a⁴-6)=а⁸-2а⁴+1-а⁴-4-а⁴+6=а⁸- 4а⁴+3</span>
1)
(х-2)^2=2-х
х^2-4х+4-2+х=0
х^2-3х+2=0
д=9-4×2×1=1
х1=(3-1)/2=1
х2=(3+1)/2=2
2)
х^2+х-12=-3х
х^2+х-12+3х=0
х^2+4х-12=0
д=16-4×1×(-12)=64
х1=(-4-8)/2=-6
х2=(-4+8)/2=2
3)
х+3-2!/(х+3)(7-х) +7-х=4
10-2!/(7х-х^2+21-3х)=4
5-!/(-х^2+4х+21)=2
!/(-х^2+4х+21)=3
-х^2+4х+21=9
-х^2+4х+21-9=0
-х^2+4х+12=0
х^2-4х-12=0
д=16-4×(-12)×1=64
х1=(4-8)/2=-2
х2=(4+8)/2=6