Y=x²+8x+14
to make a square, if a is 1, add (half of b)²
in this case, a=1, b=8, half of 8 is 4
y=x²+8x+4²-4²+14
y=(x+4)²-16+14
y=(x+4)²-2
B is the answer.
another way to do it:
the vertex is at x=-b/2a=-8/2*1=-4
when x=-4, y=(-4)²+8(-4)+14=-2
so the equation is y=[x-(-4)]²-2, which is y=(x+4)²-2, the same answer B
Answer:
-2
Step-by-step explanation:
by testing
Answer:
n = 7m
Step-by-step explanation:
n = k(m)
21 = k(3)
k = 21/3 = 7
n = 7m
Answer:
B
Step-by-step explanation:
The concept of reality and a false one = none
