Advertisements
Advertisements
प्रश्न
Solve the following equation by factorization
(x – 3) (2x + 5) = 0
उत्तर
(x – 3) (2x + 5) = 0
Either x – 3 = 0,
Then x = 3
or
2x + 5 = 0 then 2x = -5
⇒ x = `(-5)/(2)`
Hence x = 3, = `(-5)/(2)`.
APPEARS IN
संबंधित प्रश्न
Solve each of the following equations by factorization:
`x+1/x=2.5`
The difference of two natural numbers is 5 and the difference of heir reciprocals is `5/14`Find the numbers
If p and q are the roots of the equation x2 − px + q = 0, then
Solve the following equation: c
Solve the following equation: `("x" + 3)/("x" - 2) - (1 - "x")/"x" = 17/4`
Solve the following equation : x2 + 2ab = (2a + b)x
One fourth of a herd of camels was seen in the forest. Twice the square root of the herd had gone to mountains and the remaining 15 camels were seen on the bank of a river. Find the total number of camels.
Find two consecutive natural numbers such that the sum of their squares is 61.
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.
Car A travels x km for every litre of petrol, while car B travels (x + 5) km for every litre of petrol.
(i) Write down the number of litres of petrol used by car A and car B in covering a distance of 400 km.
(ii) If car A uses 4 litres of petrol more than car B in covering 400 km. write down an equation, in A and solve it to determine the number of litres of petrol used by car B for the journey.
