Question: please help with the following on radicals 7. Simplify. Rationalize denominators where needed. a. 815 21/3 (1 mark) 7 b. 513-12 (2 marks) C. 6

please help with the following on radicals

7. Simplify. Rationalize denominators where needed. a. 815 21/3 (1 mark) 7 b. 513-12 (2 marks) C. 6 V4x V14x * *>0 (3 marks) 8. Consider the expressions vx-a and va-x , where a is a positive integer. State and explain the restrictions on the variable x, in each expression. (2 marks)

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