Estimate: √5 + √15 8 4 6

Mathematics

1 answer:

aleksandrvk [35]3 years ago

6 0

$x= \sqrt{5} + \sqrt{15}$
$x^{2} =( \sqrt{5} + \sqrt15} )^2$
= 5 + 15 + 2 √5√5√3
=20 + 10√3
≈20+16
≈36

x≈6

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