Use completing the square to solve (x + 7)(x – 9) = 25 for x.

The answer is C..

x=1+/- the square root of 89

Given the equation:

Then;

Using the distributive property,

Combine like terms;

Subtract 25 from both sides we have;

Using completing square form:

Add and subtract we have;

⇒

Add 89 to both sides we have;

⇒

Taking square root both sides we get;

Add 1 to both sides we have;

Therefore, the values of x are:

and  

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step-by-step explanation:

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step-by-step explanation: