Question

Suppose a and b are positive integers such that (a+2b)(a-b) = 10.
What is the value of 2a-b?
a)1
b)2
c)3
d)4
e)5

Answer 1

Answer:

option C.

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Answer 2

Answer:

It is E or 5

Step-by-step explanation:

Use Foil

a^2 +ab-2b^2

therefor it is e