Question

(3x+4y) (3x-4y) (9x^2+16y^2)=?​

Answer 1

Answer:

81x^4-256y^4

Step-by-step explanation:

$(a+b)(a-b)=a^2-b^2$

(3x+4y)(3x-4y)(9x^2+16y^2)

=(9x^2-16y^2)(9x^2+16y^2)

=81x^4-256y^4

Answer 2

Answer:

81x^4 - 256y^4

Step-by-step explanation:

(a+b)(a-b)=(a^2-b^2)

(3x – 4y) (3x + 4y) ( 9 ^2 + 16 ^ 2 )