Question

if√80=k√5then k= a) 2 b) 4 c)8 d) 16​

Answer 1

Answer:

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Step-by-step explanation:

√80=k√5

squaring on both the sides..

[√80]^2=k^2×[√5]^2

80/5=k^2

k^2=16

square root on both the sides

√k^2=√{+-4}^2

k =+-4