Question

If A+B=4
AND A-B=2
THEN 4AB =?​

Answer 1

Answer:

12

Step-by-step explanation:

(A+B)^2 = 16

(A-B)^2 = 4

4AB= (A+B)^2 - (A-B)^2

4AB = 16 - 4

4AB = 12

hope this helps

Answer 2

Answer:

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