Find the product of the expressions — task. Maths CBSE Live product, Class 8.

1) (\(z+\)5) (\(g+9\)) \(=\)

$z g + g + 5 g + 45$
$z g + 45 + 5 g + z$
$z g + g + 5 g + 45 b$
$z g + 9 z + 5 g + 45$

2)

(2 m^{2} + 18) (8 m + 9 n + 4)

\(=\)

$16 m^{3} + 18 m^{2} n + 8 m^{2} + 144 m + 162 n + 72$
$16 m^{3} + 18 m^{2} n + 8 m^{2} + 144 mn + 162 n + 72$
$16 m^{3} + 18 m^{2} n + 8 n^{2} + 144 m + 162 n + 72$
$16 m^{3} + 18 m^{2} n + 8 m^{2} + 144 m + 72$

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