To complete a square for ax²+bx+c, you first make a=1.
in this case, a is already 1
move c to the right side: x²+14x=-47
next, add (1/2 of b)² to both sides, in this case, b=14, half of 14 is 7, so x²+14x+ 7²=-47+7²
the left side is now a perfect square: (x+7)²=2
x+7=√2 or x+7=-√2
x=√2-7, or x=-2-√7
-512.
Type negative 8 to the third power in google. It really is the answer. :)
I think It's 0.9% I'm not sure though or 1.03%
Answer:
C or A
Step-by-step explanation:
Multiply 13 by the 2 above the divide line
13*2 = 26
so the number in the box should be 260
