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5,6-5,6x-7=14-5,32x
-5,6x+5,32x=14-5,6
-0,28x=9,4
X=9,4/-0,28
X=-33 4/7
Как-то так
(-3)^2+(b×(-3))-12=0
9+(b×(-3))-12=0
(b×(-3))-12=0-9
(b×(-3))-12=-9
b×(-3)=-9-(-12)
b×(-3)=3
b=3÷(-3)
b=-1
Arcsin(-1)=-pí/2, arcsin1/2= pí/6
-pí/2+pí/6=-2pí/6=-pí/3
tg(-pí/3) = -odm. ze 3 = priblizitelno -1,732........