Download App

Polynomials — Maths STD 10 — Question

CBSE BoardEnglish MediumSTD 10MathsPolynomials1 Mark
MCQ
The zeroes of a polynomial $x^2+ 4x + 4$ are :
  • A
    Both positive
  • ✓
    Both equal
  • C
    One positive and one negative
  • D
    Both unequal
✓

Answer

Correct option: B.
Both equal
$x^2+ 4x + 4$
$= x^2+ 2x + 2x + 4 = 0$
$= x(x + 2) + 2(x + 2) = 0$
$= (x + 2) (x + 2) = 0$
$\therefore x + 2 = 0$ or $x + 2 = 0$
$\Rightarrow x = -2$ or $x = -2$

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 "M.C.Q (1 Marks)" from Polynomials→Polynomials — all question types→Maths STD 10 question papers→CBSE Board STD 10 question papers→CBSE Board question paper generator→

Similar questions

Choose the correct answer from the given four options in the following questions : For some integer $q,$ every odd integer is of the form :
→
If A(x, 2), B(-3, -4) and C(7, -5) are collinear, then the value of x is:
→
The sum of the digits of a two $-$ digit number is $15.$ The number obtained by interchanging the digits exceeds the given number by $9.$ The number is :
→
From the top of a hill, the angles of depression of two consecutive $\ km$ stones due east are found to be $30^\circ$ and $45^\circ .$ The height of the hill is :
→
$3x^2+ 2x - 1 = 0$ have :
→
The area of $\triangle\text{ABC}$ with vertices A(3, 0), B(7, 0) and C(8, 4) is:
→
If a chord of a circle of radius $7\ cm$ subtends a right angle at the centre of the circle, then the area of the minor segment is :
→
$\sec^260-1=$
→
The coordinates of the fourth vertex of the rectangle formed by the points $O(0,0), A(2,0)$ and $B(0,3)$ are
→
The decimal expansion of the number $\frac{14753}{1250}$ will terminate after :
→