#7
2,4,8,16
15,30,60,120
#9
1,2,3,
4,8,12
Answer:(3x + 7) (x +5)
Step-by-step explanation:
15 boxes is three times 5 boxes so the number of dishes in 15 boxes is
3 * 125
= 375 dishes
3x^(2)+4x-3x-5-2=0
3x^(2)+x-7=0
Discriminat= b^(2)-4ac= 1^(2)-4(3)(-7)= 1-12(-7)=1+84=85
The discrimination is bigger than 0 (delta>0) therefore there are 2 real solutions
