Question Bank / Math / Equivalent Expressions
Equivalent expressions SAT question
Math · Advanced Math · Medium · Answer it here, explanation included.
Which of the following expressions is equivalent to 
?
ExplanationShow
Choice C is correct. The expression can be written as a difference of squares x2 – y2, which can be factored as (x + y)(x – y). Here, y2 = 5, so 
, and the expression therefore factors as 
.
Choices A and B are incorrect and may result from misunderstanding how to factor a difference of squares. Choice D is incorrect; (x + 5)(x – 1) can be rewritten as x2 + 4x – 5, which is not equivalent to the original expression.
Drill this skill on Aceit
Adaptive practice, a daily plan, and score tracking take a free account so we can save your work.
More Equivalent expressions questions
- Which expression is equivalent to m4q4z-1mq5z3, where m , q , and z are positive?
- Which of the following is a factor of the polynomial above?
- If and , which of the following is equivalent to ?
- Which of the following is equivalent to the given expression?
- Which expression is equivalent to 8xx-7-3x-72x-14, where x>7?
- Which of the following is equivalent to the expression ?