Question

Multiply and simplify http://curriculum.kcdistancelearning.com/courses/ALG1x-HS-A06/b/Exams/8HW8/8HW8_q6.gif

Answer 1

using the difference of squares formula \(\large (a+b)(a-b) = a^2 - b^2\) we would get this


\[\large (4+\sqrt{8})(4-\sqrt{8}) = 4^2 - (\sqrt{8})^2\]

\[\large (4+\sqrt{8})(4-\sqrt{8}) = 16 - 8\]

\[\large (4+\sqrt{8})(4-\sqrt{8}) = 8\]

Answer 2

thank you for putting it in steps, I understood it very well! @jim_thompson5910

Answer 3

glad its all clicking now