Advertisements
Advertisements
рдкреНрд░рд╢реНрди
The sum of a number and its reciprocal is 17/4. Find the number.
рдЙрддреНрддрд░
Let the number be ‘x’
According to the given hypothesis
`x+1/x=17/4`
`rArr(x^2+1)/x=17/4`
⇒ 4(ЁЭСе2 + 1) = 17ЁЭСе
⇒ 4ЁЭСе2 - 17ЁЭСе + 4 = 0
⇒ 4ЁЭСе2 - 16ЁЭСе - ЁЭСе + 4 = 0
⇒ 4ЁЭСе(ЁЭСе - 4) - 1(ЁЭСе - 4) = 0
⇒ ЁЭСе =1/4 ЁЭСЬЁЭСЯ ЁЭСе = 4
∴ The value of ЁЭСе = 4
APPEARS IN
рд╕рдВрдмрдВрдзрд┐рдд рдкреНрд░рд╢реНрди
Solve the equation:`14/(x+3)-1=5/(x+1); xne-3,-1` , for x
Solve the following quadratic equations by factorization:
`100/x-100/(x+5)=1`
Solve the following quadratic equation by factorization.
`2"x"^2 - 2"x" + 1/2 = 0`
Solve the following quadratic equations by factorization:
\[\frac{4}{x} - 3 = \frac{5}{2x + 3}, x \neq 0, - \frac{3}{2}\]
Find the value of k for which the following equations have real and equal roots:
\[\left( k + 1 \right) x^2 - 2\left( k - 1 \right)x + 1 = 0\]
If the sum and product of the roots of the equation kx2 + 6x + 4k = 0 are real, then k =
Solve the following equation: (x-8)(x+6) = 0
Solve the following by reducing them to quadratic form:
`sqrt(y + 1) + sqrt(2y - 5) = 3, y ∈ "R".`
In each of the following, determine whether the given values are solution of the given equation or not:
x2 + x + 1 = 0; x = 0; x = 1
Use the substitution y = 3x + 1 to solve for x : 5(3x + 1 )2 + 6(3x + 1) – 8 = 0