Question

Помогите срочно
9d^2-16k^2
25y^2-81x^2
-49t^2+36s^2
0.04x^2-1

Answer 1

9d²-16k²=(3d-4k)(3d+4k)
25y²-81x²=(5y-9x)(5y+9x)
-49t²+36s²=(6s²-7t²)(6s²+7t²)
0,04x²-1=(0,2x-1)(0,2+1)