3x-2=-2x+b
5x=b+2
x=(b+2)/5
-2x+b=0
-2x=-b
x=b/2
(b+2)/5=b/2
5b=2b+4
3b=4
b=4/3
㏒ₐ(а³/b⁵) = ㏒ₐa³-㏒ₐb⁵=3*㏒ₐa-5*㏒ₐb=3*1-5-7=3-35= -32
<span>2х^2+7х=0</span>
<span>х(2х+7)=0</span>
<span>х=0 или 2х+7=0</span>
<span>х=0 или 2х=-7</span>
<span>х=0 или х=-3,5</span>
<span><span>5а^3-3а^2-10а+6=a^2(5a-3)-2(5a-3)=(a^2-2)(5a-3)</span></span>
<span><span><span> (х+5)(х-2)=-6</span></span></span>
<span><span><span>x^2-2x+5x-10+6=0</span></span></span>
<span><span><span>x^2+3x-4=0</span></span></span>
<span><span><span>x^2+4x-x-4=0</span></span></span>
<span><span><span>x(x-1)+4(x-1)</span></span></span>
<span><span><span>(x+4)(x-1)=0</span></span></span>
как в первой задаче х=-4 или х=1
4x^2+11x-20=4(x-b)(x+4)
D=121-4*4*(-20)=441=21^2
x1=-11-21/8=-4
x2=-11+21/8=5/4
4(x-x2)(x-x1)
4*5/4=5
b=5
Lgx=1
x=10
lg(0,027)x=2/3
x=∛(0,027)²=0,3²=0,09
lgx=-4
x=0,0001
lg(0,25)x=3/2
x=√(0,25)³=0,5³=0,125
log(4)x=-1/2
x=12
log(0,125)x=-2/3
x=∛8²=2²=4
log(32)x=-4/5
x=1/16
log(0,01)x=-3/2
x=√100³=10³=1000