Question

if - 5 is one of the zeroes of 2xsquare +px-15 is quardic polynomial p(xsquare +x)+k has both the zeroes equal to each other find k

Answer 1

★ Hey mate ★


here is your answer !!!



2x² + px -15


p ( -5 ) = 2 ×( -5 )² - 5 p -15


=> 2 × 25 -5p -15 = 0


=> 50 - 5p -15 = 0


35 = 5 p



=> p = 7



now ,


p ( x² + x ) + k


7 ( (-5)² +(-5) + k = 0


7 ( 25 -5 ) + k = 0

140 = k



=> k = -140



hope it helps you dear !!!


thanks !!

Answer 2

hope it helps dude and good morning