Advertisements
Advertisements
Question
`3((3x-1)/(2x+3))-2((2x+3)/(3x-1))=5,x≠1/3,-3/2`
Solution
`3((3x-1)/(2x+3))-2((2x+3)/(3x-1))=5,x≠1/3,-3/2`
⇒`(3(3x-1)^2-2(2x+3)^2)/((2x+3)(3x-1))=5`
⇒`(3(9x^2-6x+1)-2(4x^2+12x+9))/(6x^2+7x-3)=5`
⇒`(27x^2-18x+3-8x^2-24x-18)/(6x^2+7x-3)=5`
⇒`(19x^2-42x-15)/(6x^2+7x-3)=5`
⇒`19x^2-42x-15=30x^2+35x-15`
⇒`11x^2+77x=0`
⇒`11x(x+7)=0 `
⇒`x=0 or x+7=0`
⇒ `x=0 or x=-7 `
Hence, 0 and -7 are the roots of the given equation.
APPEARS IN
RELATED QUESTIONS
Find the value of a, b, c in the following quadratic equation : 2x2 ‒ x ‒ 3 = 0
Solve `6/x = 1 + x`
Solve `(3x - 2)/(2x - 3) = (3x - 8)/(x + 4)`
Find the quadratic equation, whose solution set is:
`{−3, (−2)/5}`
`x^2+12x+35=0`
A fast train takes 3 hours less than a slow train for a journey of 600kms. If the speed of the slow train is 1 Okm/ hr less than the fast train, find the speed of the fast train.
Solve:
`(1200/x + 2)(x - 10) - 1200 = 60`
`(x - a/b)^2 = a^2/b^2`
If x2 – 8x – 9 = 0; values of x correct to one significant figure are ______.
If x2 – 4x = 5, the value of x is ______.