7^a+4 × 5^b = 1715 then a×b
Answers
Answered by
0
Answer:
-1
Step-by-step explanation:
7^(a+4) × 5^(b) = 5¹ × 7³
Comparing the equation
7^(a+4) = 7³
a + 4 = 3
a = -1
Similarly,
5^(b) = 5¹
b = 1
Now,
ab = 1 × -1 = -1
HOPE IT HELPS.......
JAI HIND
Similar questions