Advertisements
Advertisements
प्रश्न
Solve the following equation by factorization
2x2 – 9x + 10 = 0,when x∈N
Advertisements
उत्तर
2x2 – 9x + 10 = 0
⇒ 2x² – 4x – 5x + 10 = 0
⇒ 2x(x – 2) – 5(x – 2) = 0
⇒ (x - 2) (2x - 5) = 0
Either x - 2 = 0,
then x = 2,
or
2x - 5 = 0,
then 2x = 5
⇒ x = `(5)/(2)`
When x ∈ N, then x = 2.
APPEARS IN
संबंधित प्रश्न
Solve the following quadratic equations by factorization:
48x2 − 13x − 1 = 0
Solve the following quadratic equations by factorization:
`a/(x - a) + b/(x - b) = (2c)/(x - c)`
The difference of two numbers is 4. If the difference of their reciprocals is `4/21`, find the numbers.
If 2 is a root of the equation x2 + bx + 12 = 0 and the equation x2 + bx + q = 0 has equal roots, then q =
Solve the following equation: `"m"/"n" "x"^2 + "n"/"m" = 1- 2"x"`
Solve the following equation: a2b2x2 + b2x - a2x - 1 = 0
Solve the following equation and give your answer up to two decimal places:
x2 − 5x − 10 = 0
Find the values of x if p + 7 = 0, q – 12 = 0 and x2 + px + q = 0,
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.
Forty years hence, Mr. Pratap’s age will be the square of what it was 32 years ago. Find his present age.
