Does the equation y = (x – p)(x – q) intercept the x-axis at the point (2,0)?
(1) pq = -8
(2) -2 – p = q
Why can't you say 0 = (2-p)(2-q) = 4-2p-2q+pq
Therefore, 4=2p+2q-pq
(1) pq=-8
4=2p+2q+8
-4=2p+2q
p+q=-2
...seems like you can solve from here...and
OA - C not sure why
(1) pq = -8
(2) -2 – p = q
Why can't you say 0 = (2-p)(2-q) = 4-2p-2q+pq
Therefore, 4=2p+2q-pq
(1) pq=-8
4=2p+2q+8
-4=2p+2q
p+q=-2
...seems like you can solve from here...and
OA - C not sure why
