Check the picture below.
notice, it simply got mirrored over the vertical y-axis.
<span>12xy - 9x - 8y + 6 = 3x(4y-3) - 2(4y-3) = (3x-2)(4y-3)</span>
The answer is -6
Because when x = -2, y = -6 on the graph
Just Subtract Riley ( 23 kg 128g ) minus Lassie ( 21kg 249g ) and then you get your difference
This question is a thought experiment.
It's essentially asking "Is 2πr² the same or not the same as π(2r)²?"
To figure it out, simply simplify π(2r)²
=π(2r)²
=π(2r)(2r)
=4πr²
Quite obviously, 2πr² is not the same as 4πr²