Question

Complete the square for x? - 14x + . Then write the resulting expression as a binomialsquared.49; (x + ²49; (x-720 -49; (x - 720-49; (x + 7)

Answer 1

We will solve as follows:

*First: We know that all quadratic expansions such as this follow the rule:

`a^2+2ab+b^2`

*Second: From this, we will complete the quadratic expansion:

`x^2-14x+49`

*Third: We will then factor it:

`(x-7)^2`

So, the solution would be option 2: 49; (x -7)^2.