Answer:
7028
Step-by-step explanation:
2. 1,3,5
4 = 18.00
= 4.50
4.50 x 6 = 25.20
= 6.00
(k+10f) (k-5f)
k^2+5kf-50f^2
What 2 numbers multiply to -50 and add to +5
10 *-5 = -50
10+-5 = 5
I hope this helps!