Question

2)Realizar: S= (3x+4y)²-(3x-4y)²/xy
A)4. B)12. C)36. D)48. E)72
3)Reduzca:
R= a⁴-b⁴ /(a²+b²)(a+b)
A)a²+b². B)a+b. C)a-b. D)1. E)a²-b²
Ayuden porfa

Answer 1

Step-by-step explanation:

2) -- Realizar -- (3x)^2 + 2 × 3x × 4y +(4y)^2

= 9x^2 + 24xy + 16y^2

= (3x)^2 - 2 × 3x × 4y + (4y)^2

= 9x^2 - 24xy + 16y^2

9x^2 +24 + 16^2 ± 9x^2 - 24xy + 16y^2 / xy

and complete next step