Question

dum hai to btao
18) Subtract: 6x(x-y+z)- 3y(x+y-z) from 2z(-x+y+z)

Answer 1

6xsquare+3ysquare+2zsquare-9xy-yz+8zx

Answer 2

Hi,

Here's ur answer :-

2z(-x+y+z)-{6x(x-y+z)-3y(x+y-z)}

= -2xz +2yz + 2z^2 -{6x^2 -6xy+6xz -3xy-3y^2 +3yz}

= -2xz -6xz +2yz -3yz +6xy+3xy -6x^2 + 3y^2 + 2z^2

= 9xy -yz -8xz -6x^2 +3y^2 +2z^2

HOPE IT HELPS (^_^)