Find the quadratic polynomial whose zeroes are -3/2 and 1/5
Answers
Answer:
x^2 -- (A+B)x +A×B
Let, A=-3/2 and B =1/5
x^2 -- (-3/2+1/5)x +(-3/2×1/5)
x^2 -- (-3×5/2×5 +1×2/5×2)x + (-3/10)
x^2 -- (-15/10 +2/10)x + (-3/10)
x^2 -- (-13/10)x + (-3/10)
x^2 +13x/10x -3/10 (would be answer)
Formula used = x^2 -- (A+B)x +A×B (where A and B are two zeros of the quadratic polynomial)
Answer:
1. Pyrolusite. Pyrolusite is a mineral consisting essentially of manganese dioxide (MnO
2
) and is important
as an ore of manganese.
It is a black, amorphous appearing mineral, often with a granular, fibrous or columnar. structure,
sometimes forming reuniform crusts.
2.Bauxite : Aluminium ore is called bauxite.The bauxite is purified to yield a white powder, aluminium oxide, from which aluminiumcan be extracted.
3. Hematite : The metal extracted from hematite ore is iron.
Hematite ore contains iron (III) oxide (Fe
2
O
3
). This iron oxide is extracted by heating it with aluminium.