Remedy for x; Peter is twice as old as his son. Twelve years in the past he was 4 situations more mature than him. How outdated are they now?Taking the square root of x2 will cancel it out. So, take the sq. root of each side. You will get x left over on one facet and furthermore or minus the sq. root of 16, four, on another side. Thus, x = ±four.I