the sum of four times of a number and three times of its inverse is 7 find the number
Answers
Answered by
8
Answer:
The number can be 1 or 3/4
Explanation
let the number be x
reciprocal of x =1/x
4 times of x =4x
ATO,
4x+3/x=7
4x²+3=7x
4x²(4+3)x +3=0
4x²-3x-4x+3=0
4(x-1)-3(x-1)=0
(x-1) (4x-3)=0
x=1 or x=3/4
Similar questions