a. Solve it,
3x+5÷4x+2=3x+4÷4x+7
b. If x+1/x=3, then find x²+1/x²
Answers
Answered by
2
Answer:
a 1/20 is your ans
Step-by-step explanation:
3x + 5 ÷ 4x + 2 = 3x + 4 ÷ 4x + 7
3x + 5/4x + 2 = 3x +4/4x + 7
5/4x - 4/4x = 7 - 2
1/4x = 5
x = 1/20
Answered by
1
Step-by-step explanation:
(b)
x+1/x=3
find x^2+1/x^2
we know that
(x+1/x)^2= x^2+1/x^2+2x×1/x
(3)^2=x^2+1/x^2+2
9=x^2+1/x^2+2
9-2=x^2+1/x^2
7=x^2+1/x^2
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