You would do 5 times 4 which is 20. then count how many zero's there are and put them after the 20.
Answer:
Step-by-step explanation:
-6x²+15x+9=0
divide by -3
2x²-5x-3=0
2x²+x-6x-3=0
x(2x+1)-3(2x+1)=0
(2x+1)(x-3)=0
either x=-1/2
or x=3
Answer:
2
Step-by-step explanation:
18-4^2=2
The surface are would be 81 bc the base area is 9 and you have four triangles with the area of 18. Add them all up and you get 81
Answer:The third one 5n(4m-3)
Step-by-step explanation: easy
