Advertisements
Advertisements
प्रश्न
Complete the following activity to form a quadratic equation.
Activity:
उत्तर
APPEARS IN
संबंधित प्रश्न
Which of the following is a quadratic equation?
(a) `x^3-3sqrtx+2=0` (b) `x+1/x=x^2`
(c)` x^2+1/x^2=5` (d) `2x^2-5x=(x-1)^2`
The sum of the roots of the equation` x^2-6x+2=0`
(a) 2 (b)-2 (c)6 (d)-6
If α and β are the roots of the equation `3x^2+8x+2=0` then (1/α+1/β)=?
(a)` -3/8` (b) `2/3` `(c) -4 (d)4`
The roots of `ax^2+bx+c=0`,a≠0 are real and unequal, if `(b^2-4ac)` is
(a)>0 (b)=0 (c)<0 (d)none of these
The perimeter of a rectangle is 82m and its area is `400m^2` . The breadth of the rectangle is
(a) 25m (b)20m
(c) 16m (d)9m
Show the x= -3 is a solution of `x^2+6x+9=0`
If one zero of the polynomial `x^2-4x+1 is (2+sqrt3)` write the other zero.
If the roots of the quadratic equation `px(x-2)+=0` are equal, find the value of p.
Solve` 2x^2+ax-a^2=0`
Solve `3x^2+5sqrt5x-10=0`
Decide whether the following equation is quadratic equation or not.
y2 = 5y – 10
Decide whether the following equation is quadratic equation or not.
`"y"^2 + 1/"y" = 2`
Write the following equation in the form ax2 + bx + c= 0, then write the values of a, b, c for the equation.
x2 + 5x = –(3 – x)
Product of Pragati’s age 2 years ago and 3 years hence is 84. Find her present age.
Choose the correct answer for the following question.
\[\sqrt{5} m^2 - \sqrt{5}m + \sqrt{5} = 0\] which of the following statement is true for this given equation?
Solve the following quadratic equation.
x2 - 4x - 3 = 0
Alka spends 90 % of the amount sent to her and saves Rs. 120 per month. Find the amount sent to her per month.
Solve any two of the following.
Solve : `3x+y=14 ; x-y=2`
Write the following equation in the form ax2 + bx + c= 0, then write the values of a, b, c for equation.
P(3+6p) = –5
Find c if the system of equations cx+3y+(3 - c ) = 0, 12x + cy - c = 0 has infinitely many solutions?