New Arrivals

## Exercise 1.1 (Math 10)

Question 1.   Write the following quadratic equations in the standard form and point out pure quadratic equations. (i).          (x + 7)(x − 3) = −7 Solution: The given quadratic equation is         (x + 7)(x − 3) = −7          (i) Multiplying the expressions (x + 7) and (x − 3) in equation (i) with each other, we have       ...

## Solution of Quadratic Equation by factorization

In this method, write the quadratic equation in the standard form as ax2 + bx + c = 0          (i) If two numbers r and s can be found for the equation (i) such that r + s = b and rs = ac then ax2 + bx + c can be factorized into two linear factors. Example Solve the ...

## Solution of Quadratic Equation by Completing Square

To solve a quadratic equation by the method of completing square is illustrated through the following examples. Example Solve the equation x2 − 3x − 4 = 0 by completing square. Solution: x2 − 3x − 4 = 0          (i) Shifting constant term −4 to the right, we have x2 − 3x = 4          (ii) Adding the square of ...