Question

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Answer 1

Answer:

(2/5)^8x+4=(2/5)^6x-6

then,(2/5) is common

then 8x+4=6x-6

8x-6x=-4-6

2x=10

x=2/10=5

so, x=5

Answer 2

Answer:

-11

Step-by-step explanation:

{[(2/5)^2]^4}^(x+2) = {[(2/5)^-2]^(x-1)}^-3

(2/5)^(8x + 16)=[(2/5)^-2]^(-3x+3)

(2/5)^(8x+16) = (2/5)^(6x - 6)

here base are same so it will get cancel to each other

therefore,

8x + 16 = 6x - 6

2x = - 22 => x = -11 Answer