Answer:
Step-by-step explanation:
1) [tex]1/\sqrt{7}[/tex][tex]1/\sqrt{7} * \sqrt{7}/\sqrt{7}[/tex][tex]\sqrt{7} / 7[/tex]2) [tex]1/\sqrt{7} - \sqrt{6}[/tex]
[tex]1/\sqrt{7} - \sqrt{6} * \sqrt{7} +\sqrt{6} / \sqrt{7} +\sqrt{6}[/tex]
[tex]1(\sqrt{7} + \sqrt{6}) / (\sqrt{7})^2 - (\sqrt{6})^2[/tex]
[tex]\sqrt{7} +\sqrt{6} / 7-6[/tex]
[tex]\sqrt{7} +\sqrt{6}[/tex]3) 1/√5 + √21/√5+√2 * √5-√2/√5-√2√5-√2 / (√5)^2 - (√2)^2√5-√2 / 34) 1/√7-21/√7-2 * √7+2/√7+2√7+2 / (√7)^2 - (√2)^2√7+2 / 7-2√7+2 / 5
Do the rest in the same way. Make sure multiply denominators in iii) and iv) with opposite sign
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Answers & Comments
Answer:
Step-by-step explanation:
1) [tex]1/\sqrt{7}[/tex]
[tex]1/\sqrt{7} * \sqrt{7}/\sqrt{7}[/tex]
[tex]\sqrt{7} / 7[/tex]
2) [tex]1/\sqrt{7} - \sqrt{6}[/tex]
[tex]1/\sqrt{7} - \sqrt{6} * \sqrt{7} +\sqrt{6} / \sqrt{7} +\sqrt{6}[/tex]
[tex]1(\sqrt{7} + \sqrt{6}) / (\sqrt{7})^2 - (\sqrt{6})^2[/tex]
[tex]\sqrt{7} +\sqrt{6} / 7-6[/tex]
[tex]\sqrt{7} +\sqrt{6}[/tex]
3) 1/√5 + √2
1/√5+√2 * √5-√2/√5-√2
√5-√2 / (√5)^2 - (√2)^2
√5-√2 / 3
4) 1/√7-2
1/√7-2 * √7+2/√7+2
√7+2 / (√7)^2 - (√2)^2
√7+2 / 7-2
√7+2 / 5
Verified answer
Step-by-step explanation:
Do the rest in the same way. Make sure multiply denominators in iii) and iv) with opposite sign