(4x + x) (5-x) / (2+x) (7-x) = 1
Answers
Answered by
3
(4x+x)(5-x)=(2+x)(7-x)
20x-4x²+5x-x²=14-2x+7x-x²
20x-4x²+5x=14+5x
20x-4x²=14
4x²-20x+14=0
4x²-8x-7x+14=0
4x(x-2)-7(x-2)=0
4x-7=0 or x-2=0
x=7/4 or x=2
20x-4x²+5x-x²=14-2x+7x-x²
20x-4x²+5x=14+5x
20x-4x²=14
4x²-20x+14=0
4x²-8x-7x+14=0
4x(x-2)-7(x-2)=0
4x-7=0 or x-2=0
x=7/4 or x=2
Similar questions