Question

1. 0,64-4k²
2. 3m²+9m³
3. 5x²+3x
4. 2,25p²-x²
5. 9+6a²b+a⁴b²
6. 7x²-0,28x
7. 8ab+b²+16a²

Answer 1

0,16(2-5k)(2+5k)
3m2(1+3m)
x(5x+3)
(1,5p-x)(1,5p+x)
(3+a2b)2
0,28x(25x-1)
(b+4a)2