Question

решите уравнение:
4^x+1 + 4*3^x = 3^x+2 - 4^x

Answer 1

Ответ:

${4}^{x + 1} + 4 \times {3}^{x} = {3}^{x + 2} - {4}^{x} \\ {4}^{x + 1} + {4}^{x} = {3}^{2 + x} - 4 \times {3}^{x} \\ {4}^{x} (4 + 1) = {3}^{x} ( {3}^{2} - 4) \\ {4}^{x} \times 5 = {3}^{x} \times 5 \\ {4}^ { x } = {3}^{x} \\ \frac{ {4}^{x} }{ {3}^{x} } = 1 \\ {( \frac{4}{3} )}^{x} = {( \frac{4}{3}) }^{0} \\ x = 0$