Question

find the value of p for which the quadratic equation px(x-3)+9=0 has equal roots.

Answer 1

Hi Mate !!!

For a quadratic equation to have equal roots discrimnant must be = 0

px² -3px +9 = 0

Discrement = √{ ( -3p)² - 36p}


9p² - 36p =0

p =0 or p = 4

Have a great future ahead