Question

Expand: (3ab + 4cd) (3ab + 4cd)​

Answer 1

Answer:

$\tt \mapsto (3ab + 4cd)(3ab + 4cd) \\ \tt \mapsto {(3ab + 4cd)}^{2} \tt \mapsto {3a {}^{2}b {}^{2} }^{} + 24abcd + 4 {c}^{2} {d}^{2}$