1.

factorize the following

Answer»
9 {x}^{2}  + 12xy \\ 3x(3x + 4y)or \\  \\  {(3x)}^{2}  + 2 \times 3 \times 2y +  {(2y)}^{2}  - ( {2y) }^{2}  \\  {(3x + 2y )}^{2}   - {(2y)}^{2}  \\(3x + 2y - 2y)(3x + 2y + 2y) \\ 3x(3x + 4y)


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