Simplify √9x² - 24x + 16?

Question

a 3x - 4

b |3x - 2√6 + 4|

c |3x - 4|

also do I have this answer right?

(exponent 3 in the sqrt sign) √-64n^3w^3 I belive the answer is c

a -4nw

b -4|nw|

c -8nw√nw (exponent 3 in the sqrt sign)

Answer 1

√(9x² - 24x + 16)=√(3x-4)^2= 3x-4

^3√-64n^3w^3=^3√(-4nw)^3= -4nw.