Answer:
b c
Step-by-step explanation:
Answer:
Combine like terms
Step-by-step explanation:
-2x+4x=2x
6+5=11
So the answer is 2x+11
Answer:
3/8, 2/3, 19/24
Step-by-step explanation:
3/8 = 0.375
19/24 = 0.7916
2/3 = 0.6
A)
The discriminant (radicand) is √(b^2-4ac), let us call this "d" for the discriminant.
If:
d<0, there are no real solutions (though there are two imaginary ones)
d=0, there is one real solution
d>0, there are two real solutions.
In this case, d=12^2-4(4)9
d=144-144
d=0
So there is one real solution.
B)
9x^2-30x+25=0
9x^2-15x-15x+25=0
3x(3x-5)-5(3x-5)=0
(3x-5)(3x-5)=0
(3x-5)^2=0
x=5/3
x=1 2/3
