Toán Lớp 8: tìm x: 2x(x-2)+3x-6=0
ai giúp e vs ạ
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Toán Lớp 8: tìm x: 2x(x-2)+3x-6=0
ai giúp e vs ạ
Comments ( 2 )
2x( x-2 ) +( 3x-6) = 0
2x( x-2 ) + 3( x-2)=0
(x-2)(2x+3 ) =0
⇒ TH1 : x-2 = 0
x = 2
Th2 : 2x + 3 = 0
2x = -3
x = -3/2
Vậy x ∈ { 2 ,-3/2}