ExamBro
ExamBro
enEnglishhiहिन्दीguગુજરાતી
JEE Mains · Maths · STD 11 - 4.2 Quadratic equations and inequations

સમીકરણ \(|\mathrm{x}+1||\mathrm{x}+3|-4|\mathrm{x}+2|+5=0\),નાં ભિન્ન વાસ્તવિક બીજોની સંખ્યા ............ છે.

  1. A \(5\)
  2. B \(2\)
  3. C \(10\)
  4. D \(20\)
Verified Solution

Answer & Solution

Correct Answer

(B) \(2\)

Step-by-step Solution

Detailed explanation

\(|\mathrm{x}+1||\mathrm{x}+3|-4|\mathrm{x}+2|+5=0\) case \(-1\) \( x \leq-3 \) \( (x+1)(x+3)+4(x+2)+5=0 \) \( x^2+4 x+3+4 x+8+5=0 \) \( x^2+8 x+16=0 \) \( (x+4)^2=0 \) \( x=-4\) case \(-2\) \( -3 \leq x \leq-2 \) \( -x^2-4 x-3+4 x+8+5=0 \) \( -x^2+10=0 \) \( x= \pm \sqrt{10}\)…
Same subject
Explore more questions on app
From JEE Mains
Explore more questions on app