Solution: 6X? -7X=- 1
x? -﹙7/6﹚X+﹙7/ 12﹚? =- 1/6﹢﹙7/ 12﹚?
﹙ X-7/ 12﹚? =25/ 144
∴X-7/ 12= 5/ 12
∴X 1= 1,X2= 1/6
5X? - 18=9X
Solution: 5X? -9X= 18
x? - 1.8X=3.6
﹙ X-0.9﹚? =4.4 1
∴X-.9= 2. 1
∴X 1=3,X2=- 1.2
4X? -3X=52
Solution: x? -﹙3/4﹚X= 13
﹙ X-3/8﹚? = 13
∴X-3/8= 29/8
∴X 1=4,X2 =- 13/4
5X? = 4-2 times
Solution: 5X? +2X=4
x? +0.2X=0.8
﹙X+0. 1﹚? =0.8 1
X+0. 1= 0.9
X 1=- 1,X2=0.8