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rjkz [21]
3 years ago
15

Please help again! Same thing!

Mathematics
1 answer:
cestrela7 [59]3 years ago
7 0

Answer:

a = - 3, b = 5

Step-by-step explanation:

To rationalise the denominator multiply the numerator/ denominator by \sqrt{2}

= \frac{\sqrt{2}(10-\sqrt{18})  }{(\sqrt{2})^2 }

= \frac{10\sqrt{2}-\sqrt{36}  }{2}

= \frac{10\sqrt{2}-6 }{2}

= 5\sqrt{2} - 3

= - 3 + 5\sqrt{2} ← in the form a + b\sqrt{2}

with a = - 3 and b = 5

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