1/x+1 + 2/x+2 = 7/x+5,xis not equal to -1,-2,-5
Answers
Answered by
3
Answer:
Step-by-step explanation:
Attachments:
Answered by
1
Answer:
1/x+1 + 2/x+2 = 7/x+5
x+2+2x+2/x²+x+2x+2 =7/x+5
3x+4/x²+3x+2=7/x+5
x+5(3x+4)=7(x²+3x+2)
3x²+15x+4x+20=7x²+21x+14
7x²+21x+14=3x²+19x+20
7x²-3x²+21x-19x+14-20=0
4x²+2x-6=0
2x²+x-3=0
2x²+3x-2x-3=0
x(2x+3)-1(2x+3)=0
(2x+3)(x-1)=0
2x+3=0 l x-1=0
x= -3/2 l x=1
x= -3/2 or 1
Similar questions