★ Quadratic Equation ★
1: Find the roots of the following quadratic equations by the method of completing the squares :
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Answer :- 1
Given Quadratic Equation is
Step :- 1 Shift the constant term on RHS.
Step :- 2 Make the coefficient of x² unity, So Divide both sides by 4.
Step :- 3 Add square of half the coefficient of x on both sides,
Answer :- 2
Given Quadratic Equation is
Step :- 1 Shift the constant term on RHS.
Step :- 2 Make the coefficient of x² unity, So Divide both sides by 2.
Step :- 3 Add square of half the coefficient of x on both sides,
Additional Information :-
Nature of roots :-
Let us consider a quadratic equation ax² + bx + c = 0, then nature of roots of quadratic equation depends upon Discriminant (D) of the quadratic equation.
- If Discriminant, D > 0, then roots of the equation are real and unequal.
- If Discriminant, D = 0, then roots of the equation are real and equal.
- If Discriminant, D < 0, then roots of the equation are unreal or complex or imaginary.
Where,
- Discriminant, D = b² - 4ac
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