Question

(2x + y + 5) (2x + y - 9) Solve The Problem in Expansions​

Answer 1

Answer:

firstly, expand it,

2x(2x+y-9) +y(2x+y-9) +5(2x+y-9)

4x²+2xy-18x+2xy+y²-9y+10x+5y-45

4x²-8x-4y-45

so this is the answer

Answer 2

$\textbf{\huge\underline{\underline\red{solution} : - }} \\ \\ \tt \purple{ = > (2x + y + 5)(2x + y - 9)} \\ \\ \tt \small\purple{ = 4{x}^{2} + 2xy - 18x + 2xy + {y}^{2} - 9y + 10x + 5y - 45} \\ \\ \tt \small\purple{ = 4 {x}^{2} - 18x + 10x - 9y + 5y + 2xy + 2xy + {y}^{2} - 45} \\ \\ \tt \small\purple{ = 4 {x}^{2} - 8x - 4y + 4xy + {y}^{2} - 45 } \\ \\ \fcolorbox{red}{aqua}{i \: hope \: it \: helps \: you.}$