Toán Lớp 6: a.37-(-125+37)=
b.x.(x+3)=0
mn làm nhanh nha
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Toán Lớp 6: a.37-(-125+37)=
b.x.(x+3)=0
mn làm nhanh nha
Comments ( 2 )
a. 37 – (-125 + 37)
= 37 + 125 – 37
= 162 – 37
= 125
b. x · ( x + 3 ) = 0
=> \(\left[ \begin{array}{l}x=0\\x+3=0\end{array} \right.\)
=> \(\left[ \begin{array}{l}x=0\\x=0 – 3\end{array} \right.\)
=> \(\left[ \begin{array}{l}x=0\\x=-3\end{array} \right.\)
@Zun ????
37-(-125)+37
=(37-37)+125
=0+125
=125
——
b)x.(x+3)=0
=>\(\left[ \begin{array}{l}x=0\\x+3=0\end{array} \right.\)
=>\(\left[ \begin{array}{l}x=0\\x=-3\end{array} \right.\)
Vậy x \in {0,-3}