Đề thi HK2 môn Toán 8 Phòng GD&ĐT Phù Cừ năm 2017...

A. \(x = \frac{a}{b}\)

B. \(x = \frac{{ - b}}{a}\)

C. \(x = \frac{{ - a}}{b}\)

D. \(x = \frac{{ - b}}{{ - a}}\)

A. \(x \ne 0\)

B. \(x \ne 0\) và \(x \ne -2\)

C. \(x \ne 0\) và \(x \ne -1\)

D. \(x \ne -1\) và \(x \ne -2\)

A. 1 – 2x < 2x - 1

B. x + 7 > 10 + 2x

C. x + 7 > 10 + 2x

D. \(x + 3 \ge 0\)

A. \(\frac{{MA}}{{MC}} = \frac{{{\rm{NB}}}}{{{\rm{NA}}}}\)

B. \(\frac{{MA}}{{NC}} = \frac{{{\rm{MB}}}}{{{\rm{NA}}}}\)

C. \(\frac{{MA}}{{MB}} = \frac{{{\rm{NA}}}}{{{\rm{NC}}}}\)

D. \(\frac{{MA}}{{MB}} = \frac{{{\rm{NB}}}}{{{\rm{NC}}}}\)

A. \({\rm{S = }}\left\{ {{\rm{ - 2;}}\,{\rm{2}}} \right\}\)

B. \({\rm{S = }}\left\{ {{\rm{ - 1;}}\,{\rm{2}}} \right\}\)

C. \({\rm{S = }}\left\{ {{\rm{ - 1; - }}\,{\rm{2;}}\,{\rm{2}}} \right\}\)

D. \({\rm{S = }}\left\{ {{\rm{ - 1;}}\,{\rm{1;}}\,{\rm{ - 2;}}\,{\rm{2}}} \right\}\)

A. \(\frac{{AB}}{{B{\rm{D}}}} = \frac{{{\rm{DC}}}}{{{\rm{AC}}}}\)

B. \(\frac{{DB}}{{DC}} = \frac{{{\rm{AB}}}}{{{\rm{AC}}}}\)

C. \(\frac{{DC}}{{B{\rm{D}}}} = \frac{{{\rm{AB}}}}{{{\rm{AC}}}}\)

D. \(\frac{{AB}}{{AC}} = \frac{{{\rm{DC}}}}{{{\rm{DB}}}}\)

A. \(12c{m^2}\)

B. \(24c{m^2}\)

C. \(36c{m^2}\)

D. \(48c{m^2}\)

A. \({\rm{ 72c}}{{\rm{m}}^{\rm{3}}}\)

B. \({\rm{ 36c}}{{\rm{m}}^{\rm{3}}}\)

C. \({\rm{ 1296c}}{{\rm{m}}^{\rm{3}}}\)

D. \({\rm{ 216c}}{{\rm{m}}^{\rm{3}}}\)