Question

rpd ex 26 tot pana la 12​

Answer 1

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$a. \: \sqrt{98} \times (3 \sqrt{242} - 5 \sqrt{32} + 3 \sqrt{50} - 2 \sqrt{128} )$

$7 \sqrt{2} (33 \sqrt{2} - 20 \sqrt{2} + 15 \sqrt{2} - 16 \sqrt{2} )$

$7 \sqrt{2} \times 12 \sqrt{2}$

$7 \times 2 \times 12$

$168$

$b. \: \sqrt{125} \times (2 \sqrt{27} - 5 \sqrt{48} - 3 \sqrt{147} + 9 \sqrt{300})$

$5 \sqrt{5} (6 \sqrt{3} - 20 \sqrt{3} - 21 \sqrt{3} + 90 \sqrt{3} )$

$5 \sqrt{5} \times 55 \sqrt{3}$

$275 \sqrt{15}$

$c. \: \sqrt{112} \times (3 \sqrt{288} + 2 \sqrt{648} ) - 18 \sqrt{2} \times (2 \sqrt{847} - 3 \sqrt{4375} )$

$4 \sqrt{7} (36 \sqrt{2} + 36 \sqrt{2} ) - 18 \sqrt{2} (22 \sqrt{7} - 75 \sqrt{7} )$

$4 \sqrt{7} \times 72 \sqrt{2} - 18 \sqrt{2} \times ( - 53 \sqrt{7} )$

$288 \sqrt{14} + 954 \sqrt{14}$

$1242 \sqrt{14}$