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प्रश्न
Show that x = –3 is a solution of x2 + 6x + 9 = 0.
बेरीज
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उत्तर
Given that the equation x2 + 6x + 9 = 0.
`x^2 + 3x + 3x + 9 = 0`
x(x + 3) + 3(x + 3) = 0
(x + 3) (x + 3) = 0
(x + 3)2 = 0
Square root both side, we get
(x + 3) = 0
x = -3
Therefore, x = -3 is the solution of given equation.
Hence, proved.
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