Question

plz solve the math question​

Answer 1

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7. If ${8}^{x - 1} = {2}^{x + 3}$, then find the value of x.

☛ 8^x-1=2^x+3

By making bases equal;

2^3x-3 = 2^x+3

3x-3 = x+3

2x = 6

x = 3

8. If √3ⁿ = 81 , then find the value of n.

☛ Given: √3^n=81

3^n/2=3^4

n/2=4

n=8

∴ value of n is 8

Answer 2

Answer:

7)x=3

8)n=8

9)4

10)1844

11)2nd one