Question

a )   3²(x+4)-52=5.2²

Answer 1

 3²(x+4)-5²=5.2²

 9(x+4)-25=5.4

 9(x+4)-25=20

 9(x+4)=20+25

 9(x+4)=45

x+4=45:9

x+4=5

x=5-4

x=1

Answer 2

3²(x+4)-5²=5.2²

9(x+4)-25=5.4

9(x+4)=20+25

9(x+4)=45

x+4=45:9

x+4=5

x=1

Answer 3

32.(x-4)-52=5.22