So you need to come up with a perfect square that works for the x coefficients.
like.. (2x + 2)^2
(2x+2)(2x+2) = 4x^2 + 8x + 4
Compare this to the equation given. Our perfect square has +4 instead of +23. The difference is: 23 - 4 = 19
I'm going to assume the given equation equals zero..
So, If we add subtract 19 from both sides of the equation we get the perfect square.
4x^2 + 8x + 23 - 19 = 0 - 19
4x^2 + 8x + 4 = - 19
complete the square and move 19 over..
(2x+2)^2 + 19 = 0
factor the 2 out becomes 2^2 = 4
ANSWER: 4(x+1)^2 + 19 = 0
for a short cut, the standard equation
ax^2 + bx + c = 0 becomes a(x - h)^2 + k = 0
Where "a, b, c" are the same and ..
h = -b/(2a)
k = c - b^2/(4a)
Vertex = (h, k)
this will be a minimum point when "a" is positive upward facing parabola and a maximum point when "a" is negative downward facing parabola.
Answer:
3.7kg
Step-by-step explanation:
4.2kg =4200
4200-500=3700
Option A: 6x^2+75x+200 is the correct answer
Step-by-step explanation:
The profit is obtained by subtracting the cost from the revenue.
Given
The Profit function will be obtained by subtracting the cost function from the revenue function
So,
Hence,
Option A: 6x^2+75x+200 is the correct answer
Keywords: Functions, function operations
Learn more about functions at:
#LearnwithBrainly
Hello,
The camera is $150
The discount is 30%
First multiply the % by 100 to get a decimal
150 * 0.30 = 45
-----------------------------------------------------------------------------------------------------------------
The Camera now costs $105
The discount price was $45
Hope this helps
-GoldenWolfX
It’s the third one
B=50.27 cm
V=371.97
