Question

( 5 + căn 3 ). (1- căn 3) - (1- 2 căn 3) mũ2

Answer 1

\(\left(5+\sqrt{3}\right)\left(1-\sqrt{3}\right)-\left(1-2\sqrt{3}\right)^2\)

\(=2-4\sqrt{3}-\left(1-4\sqrt{3}+12\right)\)

\(=2-4\sqrt{3}-1+4\sqrt{3}-12\)

\(=-11\)

Answer 2

\(\left(5+\sqrt{3}\right)\left(1-\sqrt{3}\right)-\left(1-2\sqrt{3}\right)^2\)

=\(5-5\sqrt{3}+\sqrt{3}-3-\left(1-4\sqrt{3}+12\right)\)

=\(5-5\sqrt{3}+\sqrt{3}-3-1+4\sqrt{3}-12\)

=-11

Answer 3

Sao có số 12 vậy ạ?