Robin solved a quadratic equation using the process shown.
2
0
- 2x +7
-(-2) + (-...
Mathematics, 22.09.2020 19:01, annaebrown4406
Robin solved a quadratic equation using the process shown.
2
0
- 2x +7
-(-2) + (-2)
|-2)-40530
X
2= 74-7
1
2
4+27-11
4 = 21/11
Complete the explanation of her mistake.
It should be (select) 4, because
When Robin squared the value of b, she said that (-2)2 =
-2.-2= The correct answer should be 421
Answers: 3
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