Question

Need help on this one

Answer 1

6 divsion sign looking 2k and the little 2 i can't do it on here bc it's not a math calculator but that's the answer

Answer 2

72k² = 9 x 8 x k x k = 3² x 2² x 2 x k x k

so √72k² = √(3² x 2² x 2 x k x k) = √3² x √2² x √2 x √k² = 6k√2

:)