Question

Выражение 1) (4-\sqrt{3})(\sqrt{3}+6) 2) (3\sqrt{5}+\sqrt{3})(\sqrt{3}-4\sqrt{5}) 3) (\sqrt{х}+3\sqrt{у})(\sqrt{у}-4\sqrt{х}) 4) (4\sqrt{a}-7\sqrt{b})(2\sqrt{b}-3\sqrt{a})

Answer 1

1)$(4-\sqrt{3})(\sqrt{3}+6)$
2)$(3\sqrt{5}+\sqrt{3})(\sqrt{3}-4\sqrt{5})$
3) $(\sqrt{x}+3\sqrt{y})(\sqrt{y}-4\sqrt{x})$
4) $(4\sqrt{a}-7\sqrt{b})(2\sqrt{b}-3\sqrt{a})$

1) $4 \sqrt{3} +24-3-6 \sqrt{3} =21-2 \sqrt{3}$
2)$3 \sqrt{15} -12 *5+3-4 \sqrt{15} =63- \sqrt{15}$
3)$\sqrt{xy} -4x+3y-12 \sqrt{xy} =3y-4x-11 \sqrt{xy}$
4)$8 \sqrt{ab} -12a-14b+21 \sqrt{ab} =29 \sqrt{ab} -12a-14b$