Question

5. (x + y) (3x - 5y + 2z) =​

Answer 1

(x+y)(3x-5y+2z)

=x(3x-5y+2z)+y(3x-5y+2z)

=3x^2-5xy+2xz+3xy-5y^2+2yz

3x^2-5y^2-2xy+2yz+2xz

Answer 2

Answer:

$5(x + y)(3x - 5y + 2z) = 0 \\ 5x - y + 3x + 5y - 2z = 0 \\ 3x + 5x - y + 5y - 2z = 0 \\ 2x + 4y - 2z = 0 \\ 6xy - 2z = 0$

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