The quadratic equation px² – 2
Deepak BoraNewbie
Quadratic equations : The quadratic equation px² – 2 px + 15 = 0 has two equal roots, then find the value of p.
Share
Lost your password? Please enter your email address. You will receive a link and will create a new password via email.
Equation has equal roots (px²-2px+15=0)
∴ b²-4ac =0
Comparing the equation with ax²+bx+c=0
a=p, b= -2√5p & c= 15
(-2√5p)²-4(p)(15)=0
20p²-60p=0
20p(p-3)= 0
∴ p=0,
&
P=3.