Advertisements
Advertisements
प्रश्न
Solve equation using factorisation method:
(2x – 3)2 = 49
Advertisements
उत्तर
(2x – 3)2 = 49
Taking square root on both sides
2x – 3 = ± 7
When 2x – 3 = 7
⇒ 2x = 10
⇒ x = 5
And when 2x – 3 = –7
⇒ 2x = – 4
⇒ x = – 2
संबंधित प्रश्न
Two squares have sides x cm and (x + 4) cm. The sum of this areas is 656 cm2. Find the sides of the squares.
A two digit number is such that the product of the digits is 16. When 54 is subtracted from the number the digits are interchanged. Find the number
A passenger train takes 3 hours less for a journey of 360 km, if its speed is increased by 10 km/hr from its usual speed. What is the usual speed?
`8x^2-14x-15=0`
Solve the following quadratic equations by factorization:
\[16x - \frac{10}{x} = 27\]
The value of c for which the equation ax2 + 2bx + c = 0 has equal roots is
Solve the following quadratic equation using formula method only
6x2 + 7x - 10 = 0
Solve equation using factorisation method:
`x + 1/x = 2.5`
Solve the following equation by factorization
`(x - 3)/(x + 3) + (x + 3)/(x - 3) = 2(1)/(2)`
Find the roots of the following quadratic equation by the factorisation method:
`3sqrt(2)x^2 - 5x - sqrt(2) = 0`
