a = 1
-2a + 5 = 1 -2a = -5 + 1 -2a = -4 a = -4/-2 a = 2
a = 4
a = 4
x=(-b+sqrt(b^2-4*a*c))/(2a) and (-b-sqrt(b^2-4*a*c))/(2a) (This is called the quadratic formula)
2a + 3a + 4 = 5a + 4
a = 1
-2a + 5 = 1 -2a = -5 + 1 -2a = -4 a = -4/-2 a = 2
a = 4
a = 4
a = 3a + 4 0 = 2a + 4 2a = -4 a = -2
2a+12=8 2a=-4 a=-2 So a is -2.
x=(-b+sqrt(b^2-4*a*c))/(2a) and (-b-sqrt(b^2-4*a*c))/(2a) (This is called the quadratic formula)
-4 + 2A = 12 - 15A + A-4 + 2A = 12 - 16A2A = 12 - 16A + 42A = 16 - 16AA = 8 - 8A
(4, 3)
If: 2a+13 = 5a+1 Then: a = 4
12a + 4 - 10a = 2a + 4 or 2*(a + 2)