Advertisements
Advertisements
प्रश्न
Solve for x:
5x2 : 5x = 25 : 1
बेरीज
Advertisements
उत्तर
5x2 : 5x = 25 : 1
⇒ `(5x^2)/(5x) = (25)/(1)`
⇒ `(5x^2)/(5x) = (5^2)/(1)`
⇒ 5x2 = 52 x 5x
⇒ 5x2 = 52+x
⇒ x2 = 2 + x
⇒ x2 - x - 2 = 0
⇒ (x - 2)(x + 1) = 0
⇒ x - 2 = 0 or x + 1 = 0
⇒ x = 2 or x = -1.
shaalaa.com
Solving Exponential Equations
या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
APPEARS IN
संबंधित प्रश्न
Find x, if : 42x = `1/32`
Solve for x : 9x+2 = 720 + 9x
Solve for x:
`2^(3x + 3) = 2^(3x + 1) + 48`
Evaluate : `[(-2/3)^-2]^3 xx (1/3)^-4 xx 3^-1 xx 1/6`
Solve : 3x-1× 52y-3 = 225.
Evaluate the following:
`(2^3 xx 3^5 xx 24^2)/(12^2 xx 18^3 xx 27)`
Evaluate the following:
`9^(5/2) - 3 xx 5^0 - (1/81)^((-1)/2)`
If a = `2^(1/3) - 2^((-1)/3)`, prove that 2a3 + 6a = 3
If x = `3^(2/3) + 3^(1/3)`, prove that x3 - 9x - 12 = 0
If 2400 = 2x x 3y x 5z, find the numerical value of x, y, z. Find the value of 2-x x 3y x 5z as fraction.
