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Find (X + 2)( X + 1) = (X + 4 )(x + 3) is a quadratic equation

Posted by Surender Mola 5 years, 2 months ago

CBSE > Class 10 > Mathematics

2 answers

Shubham Saxena ???? 5 years, 2 months ago

(X+2)(x+1) = (x+4)(x+3) X(x+1)+2(x+1) = X(x+3)+4(x+3) X2 + x + 2x + 2 = X2 + 3x + 4x + 12 X2 + 3x + 2 = X2 + 7x + 12 X2 + 3x + 2 - X2 - 7x - 12 = 0 4x - 10 = 0 . Hence , It is not a quadratic equation.

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Yogita Ingle 5 years, 2 months ago

(X + 2)( X + 1) = (X + 4 )(x + 3)

x ( x + 1) + 2 ( x + 1) = x ( x+ 3) + 4 ( x+ 3)

x²+ x + 2x + 1 = x² + 3x + 4x + 12
x²+ 3x + 1 = x² + 7x + 12

3x + 1 = 7x + 12

7x - 3x = 1 - 12

4x = -11 is not a quadratic equation

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