Math, asked by priyanimmaluri1789, 1 year ago

‌கீ‌ழ்‌க்கா‌ண்பனவ‌ற்றை‌ச் சுரு‌க்குக
) 2∛40+3∛625-4∛320
(i) √63-√175+√28

Answers

Answered by steffiaspinno
1

i)3 \sqrt[3]{5}  ii)0

விளக்குக:

i) 2 \sqrt[3]{40}+3 \sqrt[3]{625}-4 \sqrt[3]{320}

2 \sqrt[3]{8 \times 5}+3 \sqrt[3]{125 \times 5}-4 \sqrt[3]{64 \times 5}

=2 \sqrt[3]{2^{3} \times 5}+3 \sqrt[3]{5^{3} \times 5}-4 \sqrt[3]{4^{3} \times 5}

=2 \times \sqrt[3]{5}+3 \times \sqrt[3]{5}-4 \times 4 \sqrt[3]{5}

=4 \sqrt[3]{5}+15 \sqrt[3]{5}-16 \sqrt[3]{5}

=(4+15-16) \sqrt[3]{5}

=3 \sqrt[3]{5}

ii)\sqrt{63}-\sqrt{175}+\sqrt{28}

=\sqrt{9 \times 7}- \sqrt{25 \times 7}+\sqrt{4 \times 7}

=3 \sqrt{7}-5 \sqrt{7}+ 2 \sqrt{7}

=(3 \sqrt{7}+2 \sqrt{7})-5 \sqrt{7}

=(5 \sqrt{7})-5 \sqrt{7}

= 0

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