Simplify. 20) (7 square root 13 + 2 square root 6)(2 square root 13 + 3square ro

Question

Simplify. 20) (7 square root 13 + 2 square root 6)(2 square root 13 + 3square root 6)
22) (8 square root 6 - 2 square root 3)(2 square root 6 - 3square root 3)
I would really appreciate if you would answer my question forme. I missed my teacher teaching the lesson and I'm kinda lost inwhat I should do for these problems. I'm sorry the square rootbutton wouldn't work. But if you answer this I promise I will givefull points, no matter what. Just please help me. :) 20) (7 square root 13 + 2 square root 6)(2 square root 13 + 3square root 6)
22) (8 square root 6 - 2 square root 3)(2 square root 6 - 3square root 3)
I would really appreciate if you would answer my question forme. I missed my teacher teaching the lesson and I'm kinda lost inwhat I should do for these problems. I'm sorry the square rootbutton wouldn't work. But if you answer this I promise I will givefull points, no matter what. Just please help me. :)

Explanation / Answer

20.) Just plug it into your calculator:

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