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Answer variants:
3x25x+12=0
x2+(2a)2x+(a+5)2=0
x2+9x+20=0
2x2+3x2=0
Determine the quadratic equations, whose sum and product of roots are
 
(i) -9, 20 =
 
(ii) \frac{5}{3}, 4 =
 
(iii) \frac{-3}{2}, -1 =
 
(iv) -(2 - a)^2, (a + 5)^2 =