Download App

Quadratic Equations — MATHS STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 ScienceMATHSQuadratic Equations1 Mark
Question
Show the following quadratic equation by factorization method:
$9\text{x}^2+4=0$
✓

Answer

9x2 + 4 = 0
⇒ (3x)2 - (2i2) = 0 [$\because$ i2 = -1]
⇒ (3x + 2i) (3x - 2i) = 0
$\Rightarrow\text{x}=\frac{-2}{3}\text{i}\ \text{or}\text{ x}=\frac{2}{3}\text{i}$
$\therefore\text{x}=\frac{-2}{3}\text{ i},\frac{2}{3}\text{ i}$

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

Explore more

More "1 Marks Question" from Quadratic Equations→Quadratic Equations — all question types→MATHS STD 11 Science question papers→Rajasthan Board STD 11 Science question papers→Rajasthan Board question paper generator→

Similar questions

Find the derivative of function (x + sec x)(x - tan x) (it is to be understood that a, b, c, d, p, q, r and s are fixed non-zero constants and m and n are integers).
→
 If the centroid of a triangle formed by the points (0, 0), $(\cos \theta, \sin \theta)$ and $\sin \theta, - \cos \theta$ lies on the line y = 2x, then write the value of $\tan\theta.$ 
→
A card is drawn from a pack of 52 playing cards. Find the probability of its being a jack card.
→
How many 3-digit numbers can be formed from the digits 1, 2, 3, 4 and 5 assuming that repetition of the digits is not allowed.
→
Is the set of numbers which are multiples of 5 finite or infinite?
→
If X = {1, 2, 3}, if n represents any member of X, write the following sets containing all numbers represented by.
n - 1.
→
If A = {1, 2, 3}, B = {4, 5, 6}, the given following are relations from A to B? Give reason in support of your answer.
{(1, 6), (3,4), (5, 2)}
→
Using properties of sets, show that: $A \cap (A \cup B) = A$
→
Write the following statements in the form "if p, then q".
There is traffic jam whenever it rains.
→
Solve 30 x < 200 when x is an integer.
→