Question
Given that $\sqrt{2}$ is a zero of the cubic polynomial $6\text{x}^3+\sqrt{2}\text{x}^2-10\text{x}-4\sqrt{2},$ find its other two zeroes.

Answer

Let $\text{f(x) }6\text{x}^3+\sqrt{2}\text{x}^2-10\text{x}-4\sqrt{2}$ and given that $\sqrt{2}$ is one of the zeroes of f(x) i.e., $\big(\text{x}-\sqrt{2}\big)$ is one of the factor of given cubic polynomial. Now, using divison algorithm,

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

The angles of a triangle ABC are in the ratio 1:2:3, show this information in pie diagram.
The sum of the first n terms of an AP is given by $Sn = (3n^2 - n).$ Find its:
  1. $n^{th}$​​​​​​​ term
  2. First term
  3. Common difference.
Smt. Mita Agrawal invested Rs. 10,200 when MV of the share is Rs. 100. She sold 60 shares when the MV was Rs. 125 and sold remaining shares when the MV was Rs. 90. She paid 0.1% brokerage for each trading. Find whether she made profit or loss? and how much?
If $\theta=30^\circ,$ verify that.
$\sin2\theta=\frac{2\tan\theta}{1+\tan^2\theta}$
$\triangle\text{ABC}\sim\triangle\text{DEF}$ such that $\text{ar}(\triangle\text{ABC})=64\text{cm}^2$ and $\text{ar}(\triangle\text{DEF})=169\text{cm}^2.$ If BC = 4cm, find EF.
If the vertices of a triangle are $(1, -3), (4, p)$ and $(-9, 7)$ and its area is $15\ sq$. units, find the value(s) of $p$.
Evaluate the following:
If $\sin(\text{A}-\text{B})=\frac12$ and $\cos(\text{A}+\text{B})=\frac12,0^\circ<(\text{A}+\text{B})<90^\circ$ and $\text{A}>\text{B}$ then find A and B.
In a frequency distribution table with 12 classes, the class width is 2.5 and the lowest class boundary is 8.1, then what is the upper class boundary of the highest class?
Two triangles DEF and GHK are such that $\angle\text{D}=48^\circ$ and $\angle\text{H}=57^\circ.$ If $\triangle\text{DEF}\sim\triangle\text{GHK}$ then find the measure of $\angle\text{F}.$
From the top of a lighthouse, an observer looking at a ship makes angle of depression of 60°. If the height of the lighthouse is 90 metre, then find how far the ship is from the lighthouse. (√3 = 1.73)