SAT Math Practice Question #15498 - SATify | SATify

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SAT Math Practice Question #15498 - SATify | SATify

#15498

algebra

radicals

expressions

hard

45 sec

If $a$ and $b$ are positive numbers, which of the following is equivalent to $(2 a + b) \cdot (2 a + b)^{3}$ ?

A.

$2 a + b$

B.

$4 a^{2} + b^{2}$

C.

$4 a^{2} + 4 ab + b^{2}$

D.

$(2 a + b)^{4}$