Given data:
The given expression is (x+6)(x+2)=60.
The given expression can be written as,
x(x+2)+6(x+2)=60
x^2 +8x+12=60
x^2 +8x-48=0
x^2 +12x-4x-48=0
x(x+12)-4(x+12)=0
x=4, -12
Thus, the value of x is 4 and -12.
