Question

if x is equal to minus 2 and x is equal to minus 1 by 5 the solution of the equation 5 x square + PX + R is equal to zero find the value of P and r​

Answer 1

x= -2,x= -1/5

then quadratic equation is

(x+2) (x+1/5)=0

x^2+2x+x/5+2/5=0

5x^2+10x+x+2=0

5x^2+11x+2=0

so by similarity

p=11, R=2