Quadratic: ax^2+bx+c
a=1
roots=-4,2
=(x-(-4))(x-2)
=(x+4)(x-2)
=x^2+4x-2x-8
=x^2+2x-8
Answer:
x = 12
Step-by-step explanation:
Becuase 6/12 = 2 and 9 + 2 = 11
12
Answer:
sqrt(5)
Step-by-step explanation:
Honestly think this person means to find the magnitude of the vector. You can use dot product here, the vector with itself... But that isn't the last step.
v dot v=4+1=5
and so |v|=sqrt(5)
Answer:
u = 7
Step-by-step explanation:
In a parallelogram, GI = GK so:
u + 28 = 5u
4u = 28
u = 7