1) 4а2-25= 2)-0,09x4+81y16

Question

1) 4а2-25=
2)-0,09x4+81y16

Answer 1

1) 4a²-25= (2a-5)(2a+5)
2) -0,09x⁴+81y^16= 81y^16-0,09x⁴= (9y^8-3/10x²)(9y^8+3/10x²)