log2 (4 + 5х) = log2 (1 - 4х) + 2
log2 (4 + 5х) = log2 (1 - 4x) + log2 4
log2 (4 + 5х) = log2 4(1 - 4x)
log2 (4 + 5х) = log2 (4 - 16x)
4 + 5x = 4 - 16x
21x = 0
x =0
log2 (4 + 5х) = log2 (1 - 4х) + 2.
(4+5х)=(1-4х)+2
4+5х=1-4х+2
5х+4х=1+2-4
9х=-1
х=-1/9
log2 (4 + 5х) = log2 (1 - 4х) + 2
log2 (4 + 5х) = log2 (1 - 4x) + log2 4
log2 (4 + 5х) = log2 4(1 - 4x)
log2 (4 + 5х) = log2 (4 - 16x)
4 + 5x = 4 - 16x
21x = 0
x =0
log2 (4 + 5х) = log2 (1 - 4х) + 2.
(4+5х)=(1-4х)+2
4+5х=1-4х+2
5х+4х=1+2-4
9х=-1
х=-1/9