Question

the value of √50-√72+√8 is

Answer 1

Step-by-step explanation:

√50=5√2 (use prime factorisation)

√72=6√2

√8=2√2

so the question becomes :

5√2-6√2+2√2

=(5-6+2)(√2)

=(1)(√2)

=√2

Answer 2

Step-by-step explanation:

$5 \sqrt{2} - 6 \sqrt{2} + 2 \sqrt{2} \\ 7 \sqrt{2} - 6 \sqrt{2} \\ 1 \sqrt{2}$

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