Question

expand this
(x+2y+4)²​

Answer 1

Answer:

above is your answer I hope it will help

Answer 2

Answer:

By using 5th identity ,

(x +y+z )=

$x {}^{2} + y {}^{2} + z {}^{2} + 2xy + 2yz + 2zx$

(x+ 2y +4)=

$(x) {}^{2} + (2y) {}^{2} + (4) {}^{2} + 2 \times x \times 2y + 2 \times 2y \times 4 + 2 \times 4 \times x$

answer:

$x {}^{2} + 4y {}^{2} + 16 + 4xy + 16y + 8x$