Hey there is a minor error , caught it when I was reviewing the cards.
Q: Always Try to Factor!
x^2 – 2x^2 + x = -5(x – 1)^2 <--- ERROR It Should be x^3 -2x^2 +x = -5(x-1)^2
x(x^2 – 2x + 1) = -5(x – 1)^2
x(x – 1)^2 + 5(x – 1)^2 = 0
(x + 5)(x – 1)^2 = 0
x= -5, 1
One more thing do not fall for the trick to cancel out the (x-1)^2
between steps 2 and 3
x(x-1)^2 = -5(x-1)^2
Flashcard Error on page 43, Column 1, Row 1 : Always...
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Thanks for pointing out this error! I've made the updates to the flashcards.ktr32 wrote:Hey there is a minor error , caught it when I was reviewing the cards.
Q: Always Try to Factor!
x^2 – 2x^2 + x = -5(x – 1)^2 <--- ERROR It Should be x^3 -2x^2 +x = -5(x-1)^2
x(x^2 – 2x + 1) = -5(x – 1)^2
x(x – 1)^2 + 5(x – 1)^2 = 0
(x + 5)(x – 1)^2 = 0
x= -5, 1
One more thing do not fall for the trick to cancel out the (x-1)^2
between steps 2 and 3
x(x-1)^2 = -5(x-1)^2
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