Melinda derives the quadratic formula from the following equation, and her first four steps are shown below. ax? + bx + c = 0,where a # 0 %3D Melinda's steps: Step 1: x + Dx + a Step 2: x + x: a Step 3: x? + 2a Step 4: x + 2a

Elementary Algebra
17th Edition
ISBN:9780998625713
Author:Lynn Marecek, MaryAnne Anthony-Smith
Publisher:Lynn Marecek, MaryAnne Anthony-Smith
Chapter10: Quadratic Equations
Section10.4: Solve Applications Modeled By Quadratic Equations
Problem 160E: A city planner wants to build a bridge across a lake in a park. To find the length of the bridge, he...
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Melinda derives the quadratic formula from the following equation, and her first four steps are shown below.
ax + bx + c = 0, where a # 0
Melinda's steps:
Step 1: x +
= 0
Step 2: x + x =
a
Step 3: x + x +
2a
Step 4: x +
2a
Are Melinda's first four steps correct?
• If her steps are correct, explain how you know.
• If her steps are incorrect, name the mistake(s) she made and explain how you know.
Respond in the space provided.
P Type here to search
99+
Esc
FnLock
F1
F2
F3
F4
F5
F6
F7
F8
F9
%23
%24
&
3
4.
6.
7
R
Y U
S
G
* 00
LL
LJ
Transcribed Image Text:Melinda derives the quadratic formula from the following equation, and her first four steps are shown below. ax + bx + c = 0, where a # 0 Melinda's steps: Step 1: x + = 0 Step 2: x + x = a Step 3: x + x + 2a Step 4: x + 2a Are Melinda's first four steps correct? • If her steps are correct, explain how you know. • If her steps are incorrect, name the mistake(s) she made and explain how you know. Respond in the space provided. P Type here to search 99+ Esc FnLock F1 F2 F3 F4 F5 F6 F7 F8 F9 %23 %24 & 3 4. 6. 7 R Y U S G * 00 LL LJ
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