Question

Expand (x + 2y - 3x)².​

Answer 1

Answer:

$( {x}^{2} ) + ( {2y})^{2} + ( { - 3z})^{2} + 2 \times x \times 2y + 2 \times 2y \times - 3z \: + 2 \times - 3z + x \\ \\ {x}^{2} + {4y - 9z}^{2} + 4xy \: - 12yz \: - 6xz$