Question

expand the following (x+2y-3z)²
steps by step plz​

Answer 1

Answer:

(x+2y-3x)²

(x+(2-y)+(-3z)²

(a+b+c)²=a²+b²+c²+2ab+2bc+2ca

x²+4y²+9²-5xy+12y²-6x²

answer : [x²+4y²+9²-5xy+12y²-6x²]

Answer 2

Step-by-step explanation:

here we use formula a²-2ab+b²=[(a+b)-c)]²

so, (x+2y-3z)²

(x+2y)²-2×(x+2y)×3z+(3z)²

(x)²+2×x×2y+(2y)²-(2x+4y)3z+(3z)²

x²+4xy+4y²-6xz+12yz+9z²

x²+4y²+9z²+4xy+12yz-6xz

*Thank you*