Question

Find the value of x if (-7)^(x + 3) X 3^(2x + 6) = 3969

Answer 1

Answer:

given (-7)^(x+3)*3^(2x+6)=3969 then value of x is

Step-by-step explanation:

(-7)^(x+3)*3^2(x+3)=3969 [here 3^(2x+6) canbe written as 3^2(x+3). so it is 9^(x+3)

(-7)^(x+3)*9^(x+3)=3969

-63^(x+3)=3969. [as a^m*b^m=(ab)^m]

-63^(x+3)=63^63

63^(-x-3)=63^63

so as bases are equal their exponents will also be equal

therefore, -x-3= 63

-x=63+3

-x=66

therefore, x= -66

Answer 2

Answer:

answer = -1

Step-by-step explanation:

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