exam Maths Puzzle Numerical Ability

solve using the square property:
please tell me if I solved this problem correctly.

(x+6)^2=121
x+6=sqrt121
x+6=11
x=6+11
x=17



x-6= -sqrt121
x-6= -11
x=6-11
x= -5

x= 17, -5

Read Solution (Total 0)

exam Other Question

a^4-15a^2+56 For f(x) = 8x – 9, find f(-3).