Question
$x+\frac{1}{x}=-2 $
✓
Answer
$x+\frac{1}{x}=-2 $
$x^2+1=-2 x \Rightarrow x^2+2 x+1=0$
$\therefore$ it is a quadratic equation because it is the form of $ax ^2+ bc + c =0$
$x^2+1=-2 x \Rightarrow x^2+2 x+1=0$
$\therefore$ it is a quadratic equation because it is the form of $ax ^2+ bc + c =0$
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
$(\sec \theta + \tan \theta ) . (\sec \theta - \tan \theta ) =$ ?
→$y^2=7 y$
→is the following equation quadratic : x2 – 2x + 5 = x2
Very-Short-Answer Questions.
Two coins are tossed simultaneously Find the probability of getting:
Two coins are tossed simultaneously Find the probability of getting:
-
Exactly 1 head.
-
at most 1 head.
-
At least 1 head.
Classify the following number as rational or irrational:$\frac{22}{7}$
→If 50 shares of FV ₹ 100 each are purchased for MV ₹ 120. Find the sum invested.
Find the value of following determinant:
$\left|\begin{array}{rr}5 & -2 \\ -3 & 1\end{array}\right|$
→$\left|\begin{array}{rr}5 & -2 \\ -3 & 1\end{array}\right|$
The cost of the book is 5 rupees more than twice the cost of a pen. Show this using linear equation by taking Cost of book(x) and cost of a pen(y).
Without using trignometric tables, prove that:
$\big(\sin^265^\circ+\cos^225^\circ\big)\big(\sin65^\circ-\cos25^\circ\big)=0$
→$\big(\sin^265^\circ+\cos^225^\circ\big)\big(\sin65^\circ-\cos25^\circ\big)=0$