A
(x-3)(x+3)>0
x=3 x=-3
+ _ +
--------------(-3)---------------(3)----------------
x∈(-∞;-3) U (3;∞)
Б
x(x-3,5)²≤0
x=0 x=3,5
_ + +
-----------------[0]-------------[3.5]---------------
x∈(-∞;0] U {3.5}
X(7X-5)=0
x=0 или 7x=5
x=5/7
1)sinx=siny 1)sinП\3+у=sinу
2)x=П/3+y 2)х=П/3+у
P²-4p+4-p²-2p+3p+6=-3p+10
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