#5 Help. ​

question 5:

fourth root of 16=2

2 cubed= 8

#5 would be 8

16=2^4

(2^4)^3/4=2^4*3/4=2^3

2^3=8

question 6:

x^2=2x+3

x^2-2x-3=0

(x+1)(x-3)=0

x=-1 and x=3