Question

alguém pode me ajudam
por favor??????​

Answer 1

1. A(-5,3) e B(4,3)

$d(A,B)=\sqrt{(x_{b}-x_{a})^2+(y_{b}-y_{a})^2} \\\\d(A,B)=\sqrt{(4+5)^2+(3-3)^2} \\\\d(A,B)=\sqrt{9^2+0^2} \\\\d(A,B)=\sqrt{81+0} \\\\d(A,B)=\sqrt{81} =9$

2. A(-2,5) e B(-2,1)

$d(A,B)=\sqrt{(x_{b}-x_{a})^2+(y_{b}-y_{a})^2} \\\\d(A,B)=\sqrt{(-2+2)^2+(1-5)^2} \\\\d(A,B)=\sqrt{0^2+(-4)^2} \\\\d(A,B)=\sqrt{0+16} \\\\d(A,B)=\sqrt{16} =4$

3. A(0,-4) e B(1,1)

$d(A,B)=\sqrt{(x_{b}-x_{a})^2+(y_{b}-y_{a})^2} \\\\d(A,B)=\sqrt{1-0)^2+(1+4)^2} \\\\d(A,B)=\sqrt{1^2+5^2} \\\\d(A,B)=\sqrt{1+25} \\\\d(A,B)=\sqrt{26}$