Please tell question 12,2

D e a r s t u d e n t, A s s u m i n g, y o u w a n t s o l u t i o n f o r Q 12 (i i) p a r t (i i) S i m p l i f y : {(4 x + 3 y)}^{2} - {(4 x - 3 y)}^{2} - 48 x y [{(4 x + 3 y)}^{2} - {(4 x - 3 y)}^{2}] - 48 x y \Rightarrow U \sin g a^{2} - b^{2} = (a + b) (a - b) \Rightarrow (4 x + 3 y + (4 x - 3 y)) \times (4 x + 3 y - (4 x - 3 y)) - 48 x y \Rightarrow (4 x + 3 y + 4 x - 3 y) \times (4 x + 3 y - 4 x + 3 y) - 48 x y \Rightarrow (4 x + 4 x) \times (3 y + 3 y) - 48 x y \Rightarrow (8 x \times 6 y) - 48 x y \Rightarrow 48 x y - 48 x y \Rightarrow 0 R e g a r d s

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