Advertisements
Advertisements
प्रश्न
For quadratic equation `2x + 5/x = 5` :
पर्याय
x ≠ 0
x = 1
x = 5
x = 2
Advertisements
उत्तर
x ≠ 0
Explanation:
Given quadratic equation be
`2x + 5/x = 5` ...(1)
For x = 1;
L.H.S = `2 xx 1 + 5/1`
= 2 + 5
= 7 ≠ 5 = R.H.S
For x = 5;
L.H.S = `2 xx 5 + 5/5`
= 10 + 1
= 11 ≠ 5 = R.H.S
For x = 2;
L.H.S = `2 xx 2 + 5/2`
= `4 + 5/2`
= `(8 + 5)/2`
= `13/2`≠ R.H.S
∴ x ≠ 0 ...[For x = 0, given equation is not defined]
APPEARS IN
संबंधित प्रश्न
The sum of the squares of two numbers as 233 and one of the numbers as 3 less than twice the other number find the numbers.
A train covers a distance of 90 km at a uniform speed. Had the speed been 15 km/hour more, it would have taken 30 minutes less for a journey. Find the original speed of the train.
Solve the following equation: 2x2 - x - 6 = 0
Solve the following quadratic equation by factorisation:
x2 + 3x - 18 = 0
Solve the following equation by factorization
`x/(x - 1) + (x - 1)/x = 2(1)/(2)`
Find two consecutive odd integers such that the sum of their squares is 394.
The sum of two numbers is 9 and the sum of their squares is 41. Taking one number as x, form ail equation in x and solve it to find the numbers.
Solve the following equation by factorisation :
`sqrt(x + 15) = x + 3`
A wire ; 112 cm long is bent to form a right angled triangle. If the hypotenuse is 50 cm long, find the area of the triangle.
If the sum of the roots of the quadratic equation ky2 – 11y + (k – 23) = 0 is `13/21` more than the product of the roots, then find the value of k.
