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
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Answer:
-3
Step-by-step explanation:
-72/24
Answer: The sum =14
Step-by-step explanation:
Given that n=2
And
sum = cube of a number, n, and 16 which can be expressed mathematically as
n^3 + 6
2^3 + 6
8 + 6= 14
