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x²= x²-7x+12
0=-7x+12
7x=12
x=
1b.
³logx²-³log2=³log(4+x)
³log
x²=8+2x
x²-2x-8=0
(x-4)(x+2)=0
x-4=0 atau x+2=0
x=4 atau x=-2
2.
log x²=log3(x+6)
log x²=log(3x+18)
x²=3x+18
x²-3x-18=0
(x+3)(x-6)=0
x+3=0 atau x-6=0
x=-3 atay x=6