Question

(-2/7)^x*(-2/7)^3=(-2/7)^5

Answer 1

Answer:

x=2

Step-by-step explanation:

let -2/7=a

sub in given equation

(a^x)×a^3=a^5

${a}^{m} \times {a}^{n \ \: } = {a}^{m + n}$

by using this formula(laws of exponents)

a^x×a^3=a⁵

a^x+3 =a⁵

by this x+3=5

x=2