a=4k
b=6/k
c=9k
b²=√a.c
(6/k)²=(√a.c)²
36/k²=4k.9k
36/k²=36k²
1=k⁴
k=1
--->4k+9k=13k-->13(1)=13
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a=4k
b=6/k
c=9k
b²=√a.c
(6/k)²=(√a.c)²
36/k²=4k.9k
36/k²=36k²
1=k⁴
k=1
--->4k+9k=13k-->13(1)=13