Which of the following equations has a root in common with ?
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Thank you very much!
good question
Good question
thanks a lot
thankss
First thing I did was factor the original, which is actually a perfect square. That makes the root pretty quick to spot.
yeah this is the way. took me a sec to realize it was a perfect square too lol
got it right but the answer choices with no real roots (A and D) threw me for a second. nice little trick
thanks, helpful!
What it tests
Your ability to manipulate linear and quadratic expressions, substitute unknowns, and solve equations under time pressure.
Common trap
Losing a sign when moving terms across the equals sign, or dividing both sides by a variable that could equal zero.