Toán Lớp 7: (x+3) )2x-4) >0 nhanh với ạ mình cần gấp :”)
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Toán Lớp 7: (x+3) )2x-4) >0 nhanh với ạ mình cần gấp :”)
Comments ( 2 )
2(x + 3).(x – 2) = 0
x+3=0 hoặc x-2=0
x=-3 hoặc x=2
x(2x − 4) + 3(2x − 4) = 0
2x^2 − 4x + 3(2x − 4) = 0
2x^2 − 4x + 6x − 12 = 0
2x^2 + 2x − 12 = 0
2(x^2 + x − 6) = 0
=> x = 2
x = -3