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rezolvati in z ecuatia: -2x(-3+x)= -14


Răspuns :

6x -2x² =-14

-2x²=-14-6

-2x²=-20

2x²=20

x²=10

√x²=√10

|x|=√10  ⇒x∈{-√10; √10}
-2x(-3)+(-2)xx=-14
6-2x=-14
-2x=-14-6=-20
-2x=-20
x=-20:(-2)=10
succes la testele de saptamana asta