Question

(√28-3)(√28+3) jdidodspssoodei help

Answer 1

=(√28)^2-3^2=28-9=19

Answer 2

$(\sqrt{28}-3)( \sqrt{28}+3)=( \sqrt{28})^2-3^2=28-9=19$

Answer 3

Of course, I'd be happy to help! Let's simplify the expression step by step.

The given expression is (√28 - 3)(√28 + 3).

Step 1: Recognize the difference of squares pattern. The given expression can be simplified using the difference of squares pattern, which states that (a - b)(a + b) = a^2 - b^2.

Step 2: Identify 'a' and 'b'. In our case, 'a' is √28 and 'b' is 3.

Step 3: Square each term. √28 squared is (√28)^2 = 28. 3 squared is 3^2 = 9.

Step 4: Apply the difference of squares formula. (√28 - 3)(√28 + 3) = (√28)^2 - 3^2 = 28 - 9 = 19.

So, the simplified expression is 19.

If you have any more questions or need further assistance, feel free to ask!