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creativ13 [48]
3 years ago
7

Plz help on rationalising surds

Mathematics
1 answer:
Fittoniya [83]3 years ago
3 0
(√5 + 3)² / √20=
((√5 + 3)² / √20)(√20/√20)=
(√20(√5 + 3)²) / (√20)²=
√20(5+6√5+9) /20=
√20 (14+6√5) /20=
(14√20 +6√100) /20=
(14√20 +60) / 20=
(14(√4√5) + 60) /20=
(14(2)(√5)+60) / 20=
(28√5+60) /20=
(7√5+15) / 5

Answer:(√5 + 3)² / √20= <span>(7√5+15) / 5</span>
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3 years ago
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Yuliya22 [10]
1. distribute the parentheses.
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2 years ago
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Worth 20 points, please help!
serg [7]

Answer: 3


Step-by-step explanation:

To solve this problem you must apply the proccedure shown below:

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5 0
3 years ago
Helppp
Darya [45]

Answer:

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Step-by-step explanation:

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