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1. Quadratic Equations in One Variable
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Q4 of 65 Page 4

Let us express 3x2 + 7x + 23 = (x + 4) (x + 3) = 2 in the form of the quadratic equation ax2 + bx + c = 0 (a ≠ 0)

The given equation is




So, the equation is of the form


Here, a = 2, b = 0 and c = 9


More from this chapter

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4

Let us determine the value of ‘a’ for which the equation (a-2)x2 + 3x + 5=0 will not be a quadratic equation.

4

If be expressed in the form of ax2 + bx + c = 0 (a ≠ 0), then let us determine the co-efficient of x.

4

Let us express the equation (x+2)3 = x (x2 - 1) in the form of ax2 + bx + c = 0 (a ≠ 0) and write the co-efficient of x2, x and x°.

5

Let us construct the quadratic equations in one variable from the following statements.

i. Divide 42 into two parts such that one part is equal to the square of the other part.


ii. The product two consecutive positive odd numbers is 143.


iii. The sum of the squares of two consecutive numbers is 313.

Questions · 65
1. Quadratic Equations in One Variable
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