Answer:

Step-by-step explanation:



x € R
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
Answer:
4 times 3 is 12 and 12-17 is -5.
Step-by-step explanation:
Answer:
49
Step-by-step explanation: no idea i just evaluated like that
Answer:
10 ( b+10)
Step-by-step explanation:
10 b + 100
Factor out a 10
10 * b + 10 * 10
10 ( b+ 10)
hope it helps !!!!