Answer:1.x - 9= 3 - 9= -62.3x + 7= 3(3) + 7= 9 + 7= 163.x² + 4x - 10= 3² + 4(3) - 10= 9 + 12 - 10= 114.2x² - 6x + 26= 2(3)² - 6(3) + 26= 2(9) - 18 + 26= 18 - 18 + 26= 265.3x³ - 6= 3(3)³ - 6= 3(27) - 6= 81 - 6= 75Step-by-step explanatiotno explanition