Question

3 умножить на 2^x+3 плюс 2^x+4=4

Answer 1

3*2^x+3 + 2^x+3 *2=4
2^x+3 (3+2) =4
2^x+3 =4/5
2^x *2^3 =4/5
2^x  *8 = 4/5
2^x = 4/40 =0.1
lg2^x = lg0.1=lg10^-1 = -1
xlg2 =-1
x = - 1/lg2