Math, asked by farhanmkhan6717, 1 year ago

X²+2x-3=0 solve by factorisation method

Answers

Answered by Anonymous
1

HELLO MATE,HERE IS YOUR ANSWER :-

X²+2X-3=0

IT CAN BE WRITTEN AS:-

X²+-X+3X-3

BY TAKING COMMON:-

X(X-1)+3(X-1)

(X-1)(X+3) IS YOUR ANSWER.

THANK YOU

Answered by varadad25
2

Answer:

The roots of the given quadratic equation are

\boxed{\red{\sf\:x\:=\:-\:3}}\:\:\:\sf\:or\:\:\:\boxed{\red{\sf\:x\:=\:1}}

Step-by-step-explanation:

The given quadratic equation is

x² + 2x - 3 = 0.

x² + 2x - 3 = 0

\implies x² + 3x - x - 3 = 0

\implies x ( x + 3 ) - 1 ( x + 3 ) = 0

\implies ( x + 3 ) ( x - 1 ) = 0

\implies ( x + 3 ) = 0 or ( x - 1 ) = 0

\implies x + 3 = 0 or x - 1 = 0

\implies\boxed{\red{\sf\:x\:=\:-\:3}}\:\:\:\sf\:or\:\:\:\boxed{\red{\sf\:x\:=\:1}}

Additional Information:

1. Quadratic Equation :

An equation having a degree '2' is called quadratic equation.

The general form of quadratic equation is

ax² + bx + c = 0

Where, a, b, c are real numbers and a ≠ 0.

2. Roots of Quadratic Equation:

The roots means nothing but the value of the variable given in the equation.

3. Methods of solving quadratic equation:

There are mainly three methods to solve or find the roots of the quadratic equation.

A) Factorization method

B) Completing square method

C) Formula method

4. Solution of Quadratic Equation by Factorization:

1. Write the given equation in the form \sf\:{ax^{2}\:+\:bx\:+\:c\:=\:0}

2. Find the two linear factors of the \sf\:LHS of the equation.

3. Equate each of those linear factor to zero.

4. Solve each equation obtained in 3 and write the roots of the given quadratic equation.

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