Question

(3x + 4y) (3x - 4y) (9x2 + 16y2)​

Answer 1

Step-by-step explanation:

(3x + 4y) (3x-4y) (9x² + 16y²) using {a²- b² = (a+ b ) * (a-b)}

= {(3x)² - (4y)²} (9x²+16y²)

= (9x² - 16y²) ( 9x²+16y²). again using { a²-b² = ( a+b)*(a-b)}

= {(9x²)² - (16y²)²}

= 81 x⁴ - 256y⁴

hope it helps

Answer 2

✦ Ꭺŋʂῳɛཞ:-

$➺ (3 {x} + 4y) \: (3x - 4y) \: (9 {x}^{2} + 16 {y}^{2} )$

$➺〚 (3x + y)(3x - 4y)〛(9 {x}^{2} + 16 {y}^{2} )$

$➺〚(3 {x}^{2}) - (4 {y}^{2} ) 〛(9 {x}^{2} + 16 {y}^{2} )$

$➺(9 {x}^{2} - 16 {y}^{2} ) \: (9 {x}^{2} + 16 {y}^{2} )$

$➺ 〚(9 {x}^{2} {)}^{2} - (16 {y}^{2} {)}^{2} 〛$

$➽\bold{\boxed{ 81 {x}^{4} - 256 {y}^{4} }}$

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