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
3(5-2x) = -2(6-3x)-10x
15-6x = -12+6x-10x
15-6x = -12-4x
-2x = -27
x = 27/2
I think the answer is 27/2
0.75 = 3/4 = 75%
0.07 = 7/100 = 7%
Answer:
40
Step-by-step explanation:
The answer would be 8 or 12 depending if it is a multiplication problem or an addition problem hopefully this helped u with your home work or an assignment in general.
