SAT Practice Test - Math - Factoring

SAT practice tests arranged by topic and difficulty level. In this section find tips and tactics for solving SAT questions that focus on Factoring.

_______________________


SAT 2015 Test. $9a^4+12a^2b^2+4b^4$
Which of the following is equivalent to the expression shown above?
A) $(3a^2+2b^2)^2$
B) $(3a+2b)^4$
C) $(9a^2+4b^2)^2$
D) $(9a+4b)^4$

Answer:

Let's develop the expression in option A:
$(3a^2+2b^2)^2=$
$9a^4+2(3a^2)(2b^2)+4b^4=$
$9a^4+12a^2b^2+4b^4=$

Answer: A

_____________________________