Question

I WILL MARK YOU AS THE BRILLLIANT Find the expansion of(2x+3y+4z) 2 . ii)(x-2y+3z) 2

Answer 1

Step-by-step explanation:

i)

$(2x + 3y + 4z) {}^{2} = (2x) {}^{2} + (3y) {}^{2} + (4z) {}^{2} + 2(2x)(3y) + 2(3y)(4z) + 2(4z)(2x) \\ = 4x {}^{2} + 9y {}^{2} + 16z {}^{2} + 12xy + 24yz + 16zx$

ii)

$(x - 2y + 3z) {}^{2} = x {}^{2} +( - 2y) {}^{2} + (3z) {}^{2} + 2(x)( - 2y) + 2( - 2y)(3z) + 2(3z)(x) \\ = x {}^{2} + 4y {}^{2} + 9z {}^{2} - 4xy - 12yz + 6z$

Answer 2

Step-by-step explanation:

hope this will help you ❤️ mark me as a brainliest ❣️