Question

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4 (5 + 9√2) (3 - √7)​

Answer 1

Answer:

Step-by-step explanation:

$4(5+9\sqrt{2} )(3-\sqrt{7} )\\=4(15-5\sqrt{7} +27\sqrt{2} -9\sqrt{14})\\=60-20\sqrt{7} +108\sqrt{2} -36\sqrt{14} \\4(5+9\sqrt{2} )(3-\sqrt{7} )=60-20\sqrt{7} +108\sqrt{2} -36\sqrt{14}$

Answer 2

Answer:

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