а)(х+2)(х-6)=0
(х+2)=0 (х-6)=0
х=-2 х=6
везде алгоритм такой же.
<span>
</span>
<span>б)(х-7)(х+1,4)=0 </span>
<span>х=7 х=-1,4</span>
<span><span>
</span></span>
<span><span> в)(4a-8)(6a-12)=0 </span></span>
a=2
<span><span>г)(25c-125)(54c-108)=0 </span></span>
<span><span>c=5 c=2</span></span>
<span><span>
</span></span>
<span><span>д)p(p+13)(p-17)=0 </span></span>
<span><span>p=0 p=-13 p=17</span></span>
<span><span>
</span></span>
<span><span>е)x(x-21)(x-105)=0 </span></span>
<span><span>x=0 x=21 x=105</span></span>
<span><span>
</span></span>
<span><span>ж)(23z-46)(45z+90)(3z+24)=0 </span></span>
<span><span>z=2 z=-2 z=-8</span></span>
<span><span>
</span></span>
<span><span>з)(4x-1)(8x-3)(12x-17)=0</span></span>
<span><span>x=0,25 x=0,375 x=17/12</span></span>
<span><span>
</span></span>