Two marks exercise problems VII — task. Mathematics State Board, Class 9.

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Simplify the following using addition and subtraction properties of surds:

(i)

5 \sqrt{3} + 18 \sqrt{3} - 2 \sqrt{3}

\(=\)

i \sqrt{i}

(ii)

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

\(=\)

i \sqrt[i]{i}

(iii)

3 \sqrt{75} + 5 \sqrt{48} - \sqrt{243}

\(=\)

i \sqrt{i}

(iv)

5 \sqrt[3]{40} + 2 \sqrt[3]{625} - 3 \sqrt[3]{320}

\(=\)

i \sqrt[i]{i}

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19. Two marks exercise problems VII