Question

the distance between A(2, 7) and B(x, -1) is 10.Find x.​

Answer 1

Answer:

(x-2)'2 +(-1-7)'2 =10'2

(x-2)'2=100-64

(x-2)'2= 36

x-2= 6

x=6+2

x=8

Answer 2

Answer:

Step-by-step explanation:

x1y1=(2,7)

x2y2=(x,-1)

d=10

d=√(x2-x1)²+(y2-y1)²

10=√(x-2)²+(-1-7)²

10=x²-4x+4+64

10=x²-4x+68

10-x²+4x-68=0

-x²+4x-58=0

x²-4x+58=0