Advertisements
Advertisements
प्रश्न
Solve the following quadratic equation by factorisation:
(x - 4) (x + 2) = 0
Advertisements
उत्तर
The given quadratic equation is
(x - 4) (x + 2) = 0
⇒ x - 4 = 0 or x + 2 = 0
⇒ x = {4, -2}.
संबंधित प्रश्न
The sum of the squares of the two consecutive odd positive integers as 394. Find them.
The difference of two natural number is 3 and the difference of their reciprocals is `3/28`Find the numbers.
Solve the following quadratic equation by factorization.
`2"x"^2 - 2"x" + 1/2 = 0`
Solve the following equation: `"m"/"n" "x"^2 + "n"/"m" = 1- 2"x"`
Solve the following equation :
`1/(("x" - 1)(x - 2)) + 1/(("x" - 2)("x" - 3)) + 1/(("x" - 3)("x" -4)) = 1/6`
A two digit number is such that its product of its digit is 18. When 63 is subtracted from the number, the digits interchange their places. Find the number.
The area of the isosceles triangle is 60 cm2, and the length of each one of its equal side is 13cm. Find its base.
If `sqrt (2/3)` is a solution of equation 3x2 + mx + 2 = 0, find the value of m.
The length of verandah is 3m more than its breadth. The numerical value of its area is equal to the numerical value of its perimeter.
(i) Taking x, breadth of the verandah write an equation in ‘x’ that represents the above statement.
(ii) Solve the equation obtained in above and hence find the dimension of verandah.
If `x + 1/x = 2.5`, the value of x is ______.
