Toán Lớp 6: 1. -x . ( x – 43 ) = 0
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Toán Lớp 6: 1. -x . ( x – 43 ) = 0
Giúp nha
Comments ( 2 )
1.-x.(x-43)=0
-x.(x-43)=0
TH1 : -x = 0
⇒x=0
TH2 : x-43 =0
⇒x=0+43
⇒x=43
Vậy x=0 hoặc x=43
Giải đáp:
1. -x . ( x – 43 ) = 0
-x(x – 43) = 0
⇒\(\left[ \begin{array}{l}-x=0\\x-43=0\end{array} \right.\)
⇔ \(\left[ \begin{array}{l}x=0\\x=0+43\end{array} \right.\)
⇔ \(\left[ \begin{array}{l}x=0\\x=43\end{array} \right.\)
Vậy x ∈ {0 ; 43}