Question

Penyelesaian persamaan ekssponensial 2^x2-3x-4= 4^x+1 adalah..

Answer 1

Verified answer

2^x²-3x-4 = 4^x+1

2^x²-3x-4 = (2²)^x+1

=> x² - 3x - 4 = 2 ( x + 1 )

=> x² - 3x - 4 = 2x + 2

=> x² - 3x - 2x - 4 - 2 = 0

=> x² - 5x - 6 = 0

=> ( x - 6 )( x + 1 ) = 0

x = 6 atau x = - 1

hp = ( - 1 ,6 )