Question

Solve the attached picture..
As fast as Possible..​

Answer 1

Answer:

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Answer 2

Answer:

30 - 11$\sqrt{10}$

Step-by-step explanation:

expanding the multiplication

=3$\sqrt{5}$*4$\sqrt{5}$ + 3$\sqrt{5}$*3$\sqrt{2}$ - 5$\sqrt{2}$ *4$\sqrt{5}$ - 5$\sqrt{2}$*3$\sqrt{2}$       [since $\sqrt{a} *\sqrt{b} = \sqrt{ab}$]

= 12*5 + 9$\sqrt{10}$ - 20$\sqrt{10}$ - 15*2

= 60 - 11$\sqrt{10}$ - 30

= 30 - 11$\sqrt{10}$