Question

what is the answer of (3a + 5b) ² ​

Answer 1

$given \\ (3a + {5b})^{2} \\ it \: is \: in \: the \: form \: of \: (a + {b})^{2} = {a }^{2} + {b}^{2} + 2ab \\( 3 {a})^{2} + ({5b})^{2} + 2(3a \times 5b) \\ 9 {a}^{2} + {25b}^{2} + 30ab \\ hope \: its \: help \: you \\ please \: mark \: me \: as \: a \: brainest$