Advertisements
Advertisements
Question
Which of the following are quadratic equation:
(2x - 3) (x + 5) = 2 - 3x
Solution
Given equation
(2x - 3) (x + 5) = 2 - 3x
⇒ 2x2 + 10 x - 3x - 15 - 2 + 3x = 0
⇒ 2x2 + 10x - 17 = 10
It is quadratic equation.
APPEARS IN
RELATED QUESTIONS
Check whether the following is the quadratic equation:
(x + 2)3 = 2x(x2 - 1)
Check whether the following is quadratic equation or not.
x2 + 6x − 4 = 0
An Aero plane travelled a distance of 400 km at an average speed of x km/hr. On the return journey, the speed was increased by 40 km/hr. Write down an expression for the time taken for:
(1) the onward journey;
(2) the return journey.
If the return journey took 30 minutes less than the onward journey, write down an equation in x and find its value.
`16/x-1=15/(x+1),x≠0,-1`
Is x = 5 a solution of the quadratic equation x2 – 2x – 15 = 0?
Find the solution of the equation 2x2 – mx – 25n = 0; if m + 5 = 0 and n – 1 = 0.
Solve using the quadratic formula x² – 4x + 1 = 0
Solve:
`2((2x - 1)/(x + 3)) - 3((x + 3)/(2x - 1)) = 5; x ≠ -3, (1)/(2)`
A bi-quadratic equation has degree:
The equation (x – 2)2 + 1 = 2x – 3 is:
