Question

if 2^n-7*5^n-4=1250,find the value of n ​

Answer 1

Answer:

Explanation:

With exponential equations, one approach is to make the bases on both sides the same.

2

n

−

7

×

5

n

−

4

=

1250

2

n

−

7

×

5

n

−

4

=

2

×

5

4

Now we can compare the indices of like bases.

n

−

7

=

1

→

n

=

8

n

−

4

=

4

→

n

=

8

Do not be tempted to multiply the

2

and

5

!

The indices are different so you may not.

Step-by-step explanation:

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Answer 2

Answer:

2^n-7*5^n-4=1250

2^n-7*5^n-4=2×5^4

now we are comparing on the power.

n-7=1 n-4=4

n=8. n=8

thair for

value of n is 8