Question

Which strategy is the most appropriate strategy to solve (x−1)^2=9 ?

Answer 1

(x-1)^2=9 <=> x-1=3 <=> x=4

Answer 2

Square root property:

If
`y^2=b` then;
`y = √(b)`

Given the equation:

`(x-1)^2=9`

Using square root property;

Then;

`x-1 = √(9)`

Simplify:

`x-1 = 3`

Add 1 to both sides we have;

`x = 4`

Therefore, the strategy is the most appropriate strategy to solve
`(x-1)^2=9` is square root property and the value of x is 4