think about two numbers that will get 25:
think about two numbers that will get 10
use the 5 times tables
5*5= 25
Use 5+5= 10
x^2+10x-25= 0
(x+5)(x+5)= 0
x+5= 0 , x+5= 0
x+5-5= 0-5
x= -5
x+5-5= 0-5
x= -5
Answer :
only x= 5
If the discriminant is a positive number, there will be 2 possible solutions. If you replace the entire section of b²-4ac with 16, you will see that the equation becomes; (-b+-√16)/2a --> leading to an answer with the + and another with the -.
If the discriminant is 0, there will be 1 possible solution, (again replace this into the discriminant value) (-b)/2a ---> this formula is used to also find the x coordinates of a vertex, fyi.
If the discriminant is a negative number, there will be no solution (since squareroot of a negative number is not possible)
Hope I helped :)
Answer:
1 number
Step-by-step explanation:
6.66
6.6 recurring
so the smallest sequence must be 6.6'
This equation has one solution which is -1.5
3x+7=-3x-2
+2. +2
3x+9=-3x
-3x. -3x
9= -6x
/-6. /-6
X= -1.5
