The values of the unknown which satisfy a quadratic equation are called roots.
To find roots of quadratic equation
1. write quadratic equation in general form,
2. factorise the quadratic expression,
3. equate each linear expression to zero and solve the linear equation.
To find roots using scientific calculator,
1. change mode to equation mode.
2. choose quadratic equation.
3. input the value of a,b and c from the general form of quadratic equation.
4. get the value of the two roots from the calculator.
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