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Formation of quadratic equation from roots
An equation in which the highest power of the unknown symbol or variable say x is two is called a quadratic equation. The standard form of a quadratic equation is ax2+bx+c=0         (a≠0)
Types of quadratic equation:
(i)Pure quadratic equation. (ii)Adfected quadratic equation
Pure quadratic equation:
In the quadratic equation ax2+bx+c=0, (a≠0). If b = 0, it is a pure quadratic equation. So the standard form of pure quadratic equation is ax2+bx+c=0, (a≠0).
Adfected quadratic equation:
The standard form of adfected quadratic equation is ax2+bx+c=0, (a≠0), (b≠0).
Method of solving quadratic equation.
(I) Resolving into factors :
Reduce any quadratic equation in the form of ax2+bx+c=0 and then resolve the trinomial into two linear factors. Each factor can then be equated to zero and the value of the unknown quantity can be determined

(iii)Method of completion of squares:

The quadratic equation ax2+ bx +c = 0 sometimes cannot be resolved in…


PrepositionFrom Wikipedia, the free encyclopediaPrepositions are words which link nouns, pronouns and phrases to other words in a sentencePrepositions usually describe the position of something, the time when something happens and the way in which something is done,[1] although the prepositions "of," "to," and "for" have some separate functions.[2]Prepositions can sometimes be used to end sentences. For example, "What did you put that there for?"[3]Example 2: A pen is a device to write with.The table below shows some examples of how prepositions are used in sentences. FunctionSentencePositionThe cat is under the table.
He is sitting on the chair.
The pencil is in the box. TimeThe class starts at 8 am.
I am going to Spain on Wednesday. How something is doneWe travelled by car.PossessionThe book belongs to Colin.
The door of the house is red. Here is a list of common prepositions: AboutAboveAcrossAfterAlongAmidAmongAroundAsAtBeforeBehind