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प्रश्न
State true and false:
`(2"x"-4)/("x"+1)` = − 1, when x = 1
विकल्प
True
False
MCQ
सत्य या असत्य
उत्तर
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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