Plug the values into the second equation to see if they end up equaling 0.
-4: 2(-4)^2 - 6(-4) - 8 = 0
2(16) + 24 - 8 = 0
32 + 16 = 0
Not -4
-1: 2(-1)^2 - 6(-1) - 8 = 0
2 + 6 - 8 = 0
8 - 8 = 0
0 = 0
Yes -1
0: 2(0)^2 - 6(0) - 8 = 0
0 - 0 - 8 = 0
Not 0
1: 2(1)^2 - 6(1) - 8 = 0
2 - 6 - 8 = 0
-12 = 0
Not 1
4: 2(4)^2 - 6(4) - 8 = 0
2(16) - 24 - 8 = 0
32 - 32 = 0
0 = 0
Yes 4
————
Or use the quadratic equation ( - b +/- sqrt( b^2 - 4ac)) / 2a
————
a would be 2–
b would be -6–
& c is -8
Answer:
the center is (3, -4) and the radius is = 2
Step-by-step explanation:
Answer:
62 1/4 = 62.25
Step-by-step explanation:
Turn the improper fraction into a mixed number then divide as an equation.
62 x 4 = 248
248 + 1 = 249.
Put the 249 over the 4 and divide.
249/4 = 249 ÷ 4 = 62.25
The given expression is 2x-3 .
So when x =1, we will get 2(1)-3 = 2-3 =-1
When x=2, we will get, 2(2) -3 = 4-3 =1
When x=3, we will get 2(3)-3 = 6-3=3
When x=4, we will get 2(4)-3 = 8-3=5
So the required result of the expansion is -1+1+3+5=8
Correct option is the second option .
