Question

expand (2x -3y +zx)whole square​

Answer 1

Step-by-step explanation:

{(2x-3y)+zx}²

Formula applied= (a+b)²=a²+2ab+b²

Here, a=(2x-3y) and b= zx

Solution-(2x+3y)²+2.(2x-3y).zx+ (zx)²

= {(2x)²+2.2x.3y+(3y)²} + 2zx(2x-3y)+z²x²

=4x²+12xy+9y²+ 4x²z-6xyz+z²x²

= 8x²+12xy+9y²+4x²z-6xyz+z²x²