Question

Distance between the points (3 - 2 ) and (a,1 ) is 5 then the value of a is


-7,1

7, -1

7

-1

​

Answer 1

Answer:

7, -1

Step-by-step explanation:

$(3-a)^{2} + (-2-1)^2 = 25\\9+a^2-6a+9 = 25\\ a^2-6a-7=0\\\\a^2-7a+a-7=0\\a(a+1)-7(a+1)=0\\\\a=-1 ; a=7$