Example Problems V — task. Mathematics CBSE, Class 9.

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Simplify the following expressions:

(i) \((5+\sqrt{7})(2+\sqrt{5})=\)

i + i \sqrt{i} + i \sqrt{i} + \sqrt{i}

(ii) \((5+\sqrt{5})(5-\sqrt{5})=\)

(iii) \((\sqrt{3}+\sqrt{7})^2=\)

i + i \sqrt{i}

(iv) \((\sqrt{11}+\sqrt{7}\)\((\sqrt{11}-\sqrt{7}=\)

Did you find an error?

5. Example Problems V