Question

aflați x din egalitatea 12×4 la puterea x-5×4 la puterea x=7×2 la puterea12

Answer 1

12*4^x-5*4^x=7*2^12
4^x(12-5)=7*2^12
2^2x*7=7*2^12
7*2^2x=7*2^12
2x=12
x=12/2
x=6