Đề thi chính thức vào 10 môn Toán Sở GD&ĐT Bắc Kạn...

A a) \(S=\left\{ \frac{2}{3} \right\}\)   b) \(S=\left\{ 2;3 \right\}\)

c) \(\left( x;y \right)=\left( 5;3 \right)\)      d) \(16 (km/h)\)

B a) \(S=\left\{ \frac{1}{3} \right\}\)   b) \(S=\left\{ 2;3 \right\}\)

c) \(\left( x;y \right)=\left( 5;3 \right)\)      d) \(16 (km/h)\)

C a) \(S=\left\{ \frac{2}{3} \right\}\)   b) \(S=\left\{ 2;9 \right\}\)

c) \(\left( x;y \right)=\left( 5;3 \right)\)      d) \(16 (km/h)\)

D a) \(S=\left\{ \frac{2}{3} \right\}\)   b) \(S=\left\{ 2;3 \right\}\)

c) \(\left( x;y \right)=\left( -1;3 \right)\)      d) \(15 (km/h)\)

A a) \(A=-7\sqrt{5}\)

b) \(B=\sqrt{x}+1\)

B a) \(A=-3\sqrt{5}\)

b) \(B=\sqrt{x}+1\)

C a) \(A=-3\sqrt{5}\)

b) \(B=\sqrt{x}-1\)

D a) \(A=13\sqrt{5}\)

b) \(B=\sqrt{x}-1\)

A \(\left( a;b \right)=\left( \sqrt{2};-1 \right);\left( a;b \right)=\left( -\sqrt{2};-1 \right)\)

B \(\left( a;b \right)=\left( 2\sqrt{2};-3 \right);\left( a;b \right)=\left( -2\sqrt{2};-3 \right)\)

C \(\left( a;b \right)=\left( 2\sqrt{3};-1 \right);\left( a;b \right)=\left( -2\sqrt{3};-1 \right)\)

D \(\left( a;b \right)=\left( 2\sqrt{2};-1 \right);\left( a;b \right)=\left( -2\sqrt{2};-1 \right)\)

A  \(m=2;m=-\frac{1}{2}\)

B  \(m=4;m=-\frac{1}{2}\)

C  \(m=2;m=-\frac{1}{3}\)

D  \(m=2;m=-\frac{1}{4}\)