Question

find |a| and |b| if (a+b).(a-b)=12a and |a|=2|b|​

Answer 1

Answer:

Explanation:

a²-ab+ab-b²=12

a²-b²=12

a=2b

(2b)²-b²=12

3b²=12

b²=4

b=2

a=2(2)

a=4