In ax^2 + bx + c = 0 suppose b = 0 and the roots are real. The formula then gives x = ± √-4ac2a, so the two roots are:

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equal in magnitude but opposite in sign. With b = 0 the -b term vanishes, leaving x = ± √-4ac2a — the same number with a plus and a minus sign. For example 2x^2 - 8 = 0 gives x = 2 and x = -2.

In $a x^{2} + b x + c = 0$ suppose $b = 0$ and the roots are real.
The formula then gives $x = \pm \frac{- 4 a c}{2 a}$ , so the two roots are:

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More Class 10 The Quadratic Formula practice

In ax2+bx+c=0 suppose b=0 and the roots are real.The formula then gives x=±2a−4ac​​, so the two roots are:

Step-by-Step Solution

Master this chapter in 30 minutes a day.

More Class 10 The Quadratic Formula practice

In $a x^{2} + b x + c = 0$ suppose $b = 0$ and the roots are real.
The formula then gives $x = \pm \frac{- 4 a c}{2 a}$ , so the two roots are: