Question

Factor:9x^2-64

Answer 1

Difference of squares - \((3x)^2 - 8^2\).
Difference of squares \(a^2 - b^2\) is \((a + b)(a-b)\) when factored. Similarly:

\(\Large \color{Black}{\Rightarrow (3x)^2 - 8^2 = (3x + 8)(3x - 8) }\)

Answer 2

thanks