16х^2-8х=-1
8х(2х-1)=-1
8х=-1 х=-1/8
2х-1=1
2х=1+1
2х=2
х=1
A²(a-2)-a(a-2)²
a*(a-2)*2
2a *(a-2)
(12а+8):4 = 4(3а+2):4 = 3а+2
(-15-5у):(-5) = -5(3+у):(-5) = 3+у
(а-ав):а = а(1-в):а = 1-в
(-с+сд):(-с) = -с(1-д):(-с) = 1-д
(4ав²+3ав):(ав) = ав(4в+3):(ав) = 4в+3
(-1ху+1х³у):(ху) = ху(-1+х²):(ху) = х²-1
4a^2 8a 1 4a^2-8a+1 (2a-1)^2 2a-1
a)= __________ - ________ +______ = _________ =___________ =______
4a^2-1 4a^2-1 4a^2-1 4a^2-1 (2a-1)(2a+1) 2a+1
16b^2 8b 5 16b^2-8b+5
б)=________ - _______ + ________= __________
16b^2-1 16b^2-1 16b^2-1
16b^2-1
9с^2 12c 3 9c^2-12c+3
в)=_______ - ________ + ______= __________
9c^2-4
9c^2-4 9c^2-4
9c^2-4
a^2+b^2 5ab^2 - b
5ab^2 +b a^2+b^2-5ab^2+b-5ab^2-b
г)= _______ - ________ - __________ =_______________________ =
(a-b)^2
(a-b)^2
(a-b)^2
(a-b)^2
a^2-10ab^2+b^2
=______________
(a-b)^2
=[ (-sina-cosa)]:{1+2sina cosa}=-(sina+cosa):(sina+cosa)^2=-1/(sina+cosa)