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2x²+7x+6=0
(x+3)(x+4)=0
x= -3 x= -4
jadi himpunan penyelesaiannya {-3,-4}
itu menurut saya, maaf bila salah mohon dikoreksi lagi.
(2x+3)(x+2)=0
x=-3/2. & x=-2