- Phép nhân và phép khai phương - có lời giải chi...

A \(20\)

B \(10\)

C \(2\sqrt {5}\)

D \(30\)

A \(60\)

B \(75\)

C \(100\)

D \(120\)

A \(45\)

B \(55\)

C \(50\)

D \(60\)

A \(10\)

B \(9\)

C \(15\)

D \(25\)

A \(3\)

B \(2\sqrt 3 \)

C \(3\sqrt 2 \)

D \(2\)

A \(7,36\)

B \(7,56\)

C \(9,36\)

D \(6,64\)

A \(9,1\)

B \(9,9\)

C \(10,2\)

D \(10,1\)

A \(15\)

B \(17\)

C \(26\)

D \(21\)

A \(36.(1 - a)\)

B \(36.(a - 1)\)

C \(48.(a - 1)\)

D \(48.(1 - a)\)

A \({a^2}.(a - 3)\)

B \({a^2}.(3 - a)\)

C \(a.(a - 3)\)

D \(a.(3 - a)\)

A \(37\)

B \(39\)

C \(44\)

D \(46\)

A \(\frac{1}{2}\)

B \(1\)

C \(2\)

D \(\frac{3}{2}\)

A \(2\)

B \(5\)

C \(7\)

D \(8\)

A \(3\)

B \(9\)

C \(6\)

D \(3\sqrt 3\)

A \(\frac{3}{4}.x.y^3\)

B \(\frac{3}{4}.\left| x \right|.y^3\)

C \(\frac{3}{4}.\left| x \right|.\left| {{y^3}} \right|\)

D \(\frac{3}{4}.x.\left| {{y^3}} \right|\)

A \(15\)

B \(25\)

C \(45\)

D \(50\)