Penelope determined the solutions of the quadratic function by completing the square.
f (x) = 4x2 + 8x + 1
-1 = 4x2 + 8x
-1 = 4 (x2 + 2x)
-1 + 1 = 4 (x2 + 2x + 1)
0 = 4 (x + 2) 2
0 = (x + 2) 2
0 = x + 2
-2 = x
What error did Penelope make in her work?
Answers (1)
Know the Answer?
Not Sure About the Answer?
Get an answer to your question ✅ “Penelope determined the solutions of the quadratic function by completing the square. f (x) = 4x2 + 8x + 1 -1 = 4x2 + 8x -1 = 4 (x2 + 2x) ...” in 📙 Mathematics if there is no answer or all answers are wrong, use a search bar and try to find the answer among similar questions.
Search for Other Answers
You Might be Interested in
Simplify: (2x^2 - 9x + 3) + (-7x^2 + 4x - 2) A. - 5x^2 - 13x + 1 B. - 5x^2 + 5x - 1 C. 9x^2 - 4x + 1 D. - 5x^2 - 5x + 1
Answers (2)
A company makes cones out of solid foam. Each cone has height of 12 inches, and it's base has radius of 1.5 inches. How much foam is needed to make 150 cones
Answers (1)
As a salesperson you get $23 / day and $3.60/each sale you make. If you want to make at least $84. in one day, how many sales would need to make? a 15 b 16 c 17 d 18
Answers (1)
Which two each represent 3/12
Answers (1)
If Ray's car gets an average of 32 mpg and he fills his tank with 18.6 gallons of gas, how far can Ray travel on a tank of gas?
Answers (1)
New Questions in Mathematics
What is the basic ratio for 5:15
Answers (1)
When negative five is subtracted from a number he result is 10
Answers (1)
Put the rational numbers correctly in order from least to greatest. -0.48, - 0.47, - 0.46, - 0.45
Answers (2)
Write the fraction and decimal form 15/128
Answers (2)
What is the rock style
Answers (1)