Question

if x y and z are integers and xy + z is an odd integer is x an even integer? (1) xy + xz is an even integer. (2) y + xz is an odd integer.

Answer 1

1 is correct because x(y+Z), anything multiplied by an even integer will be even.

2 can not be confirmed as it depends on y if it is odd or even and can not be confirmed with given information.

Answer 2

$\sf{\green{\underline{\underline{\orange{Answer :-⬆}}}}}$

(8x+1)(x+8)

=(8x+1)(x+8)

=(8x)(x)+(8x)(8)+(1)(x)+(1)(8)

=8x2+64x+x+8

=8x2+65x+8