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State True and False: (2"X"-4)/("X"+1) = − 1, When X = 1 - Mathematics

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Question

State true and false:

`(2"x"-4)/("x"+1)` = − 1, when x = 1

Options

  • True

  • False

MCQ
True or False

Solution

True.

Verification `(2"x"-4)/("x"+1)` = − 1,

When x = 1 = `(2xx1-4)/(1+1)` = − 1

= `(2-4)/2=-1=(-2)/2=-1`

= − 1 = − 1.

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Concept of Substitution
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Chapter 20: Substitution (Including Use of Brackets as Grouping Symbols) - Exercise 20 (A)

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Selina Mathematics [English] Class 6
Chapter 20 Substitution (Including Use of Brackets as Grouping Symbols)
Exercise 20 (A) | Q 8.3
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