Question

20.21a²b=______Required to answer. Single choice.

(1 Point)

3×7×a×a×b

21×a×b×b

3×7×a×b​

Answer 1

Answer:

3×7×a×a×b is correct answer

Step-by-step explanation:

Mark me as brainlist answer

Answer 2

Answer:

option 2 is correct answer

Step-by-step explanation:

mark him as brainlist answer,first he answer this question