Question

Rationalise the denominator 2√2÷7+√5.​

Answer 1

Step-by-step explanation:

2/√7+√5

=2(√7-√5)/(√7+√5)(√7-√5)

=2(√7-√5)/7-5

=2(√7-√5)/2

=(√7-√5)

this is the answer

Answer 2

Answer:

7√2-√10 ÷ 22

Step-by-step explanation:

⇒2√2÷7+√5×7-√5÷7-√5 (Multiply the numerator and denominator, with the denominator but with the signs changed i.e., +⇒- and -⇒+)

⇒2√2×(7-√5)÷(7-√5)²

⇒2√2×(7-√5)÷7²-√5²

⇒2√2×(7-√5)÷49-5

⇒2√2×(7-√5)÷44

⇒7√2-√10÷22

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