? Repedeee...multumesc
![Repedeeemultumesc class=](https://ro-static.z-dn.net/files/d49/7d542a8109f4f9d2f57c75adc710113e.jpg)
Răspuns:
a) x²-9²=x²-81
b) (4x)²-5²=16x-25
c) (6x)²-(2y²)²=36x²-4y⁴
d) (2√7x)²-1²= 28x²-1
Explicație pas cu pas: