Rationalise the denominator 2 root2+7/2 root2-7
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your answer is in the attachment
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Answer:
- 57 - 28√2 / 41
Step-by-step explanation:
2√2 + 7 / 2√2 - 7
Rationalising the denominator
2√2 + 7 / 2√2 - 7 * 2√2 + 7 / 2√2 + 7
(2√2 + 7)² / (√8)² - (7)²
(√8)² + (7)² + 2(√8)(7) / 8 - 49
8 + 49 + 14√8 / -41
57 + 28√2 / -41
- 57 - 28√2 / 41
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