Question

(3x+y) whole cube answer

Answer 1

Answer:

${(3x + y)}^{3} = {27 {x}^{3} } + {y}^{3} + 3( {3x)}^{2} y + 3 {y}^{3} 3x \\ \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = 27 {x}^{3} + {y}^{3} + 27 {x}^{2} y + 9 {y}^{3} x$

Answer 2

Answer:please see the attachment

Step-by-step explanation: thk u..hope useful