Advertisements
Advertisements
प्रश्न
Solve the following equation using the formula:
2x2 + 7x + 5 = 0
उत्तर
2x2 + 7x + 5 = 0
Here a = 2, b = 7 and c = 5
Then `x = (-b +- sqrt(b^2 - 4ac))/(2a)`
= `(-(7) +- sqrt((7)^2 - 4(2)(5)))/(2(2))`
= `(-7 +- 3)/4`
= `(-7 + 3)/4` and `(-7-3)/4`
= –1 and `-5/2`
APPEARS IN
संबंधित प्रश्न
If x = 2/3 and x = −3 are the roots of the equation ax2 + 7x + b = 0, find the values of aand b.
John and Jivanti together have 45 marbles. Both of them lost 5 marbles each, and the product of the number of marbles they now have is 128. Form the quadratic equation to find how many marbles they had to start with, if John had x marbles.
Solve:
2x4 – 5x2 + 3 = 0
Find the value of x, if a + 1 = 0 and x2 + ax – 6 = 0
Solve the following equation using the formula:
3x2 + 2x – 1 = 0
Which of the following are quadratic equation in x?
`x^2-x-3=0`
Solve the following equation by using formula :
`(x + 1)/(x + 3) = (3x + 2)/(2x + 3)`
Choose the correct answer from the given four options :
Which of the following is a quadratic equation?
From the following equations, which one is the quadratic equation?
Which of the following is not a quadratic equation?
