If (x+1)(x+2)(x+3)(x+4)=24, then which of the following is true?
A
Zero is one of the roots of the equation
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B
The given equation has no roots
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C
The given equation has exactly 24 roots
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D
The given equation is an identity
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Solution
The correct option is A Zero is one of the roots of the equation (x+1)(x+4)(x+2)(x+3)=24 or (x2+5x+4)(x2+5x+6)=24 When multiplied, the constant term 24 will be cancelled and x will become a common factor and, hence, x=0 will be one of the roots.