Question

If A(x,0) and B(0,3) and AB= 5 then find x using distance formula
The formula is in picture

Answer 1

Hey frnd here is ur solution
AB=5
A(x,0) and B(0,3)
x1 = x, x2=0
y1=0 , y2 = 3
AB=5
$\sqrt{ {(x - 0)}^{2} + {(0 - 3)}^{2} } = 5 \\ \sqrt{ {x}^{2} + {( - 3)}^{2} } = 5 \\ {x}^{2} + 9 = {5}^{2} \\ {x}^{2} = 25 - 9 \\ {x}^{2} = 16 \\ x = \sqrt{16} \\ x = 4$
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Answer 2

Answer:x = +4 or -4

Step-by-step explanation:

AB² = (x2 - x1)² +(y2 - y1)²

25 = ( 0 - x)² + ( 3 -0)²

25 = (-x)² + (3)²

25 = x² + 9

16 = x²

x = +4 or -4

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