Free Practice Question
PS · Problem Solving
sub-505
Algebra
Given that , what is the result of ?
Answer Choices
Correct answer marked belowA
-5
B
-2
0
Correct
D
2
E
3
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Explanation
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Official Explanation
Official
To solve for y, we start with the equation .
This leads to .
Simplifying gives us , which rearranges to .…
This leads to .
Simplifying gives us , which rearranges to .…
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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.
Details
Difficulty
sub-505
Type
PS
Category