Question

x(x+4)+3x(2x2-1)+4x2+4

Answer 1

given :- x(x + 4) + 3x(2x² - 1) + 4x² + 4

= x² + 4x + 6x³ - 3x + 4x² + 4

= 6x³ + x² + 4x² + 4x - 3x + 4

= 6x³ + 5x² + x + 4

Answer 2

hope it would help you