Free Practice Question
PS · Problem Solving
sub-505
Algebra
Calculate the expression for the values x = − 3, y = 2, and z = 4.
Answer Choices
Correct answer marked belowA
160
168
Correct
C
98
D
96
E
48
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Explanation
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Official Explanation
Official
Given: x = − 3, y = 2, and z = 4. We can rewrite the expression as . Substituting the…
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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