Answer:
Step-by-step explanation:
<u><em>b).</em></u>
2x² - 9x - 5 = ( x - 5 )( 2x + 1 )
3x² - 15x = 3x ( x - 5 )
=
Then the determinant is 0.
Determinant of ( 1 2 ) = 1*2 - 2*1 = 0
( 1 2 )
6+4y
