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Question

Algebra Triangle A B C has side lengths of AB=x2x+5,BC=5x4A B=x^2-x+5, B C=5 x-4, and AC=3x22x1A C=3 x^2-2 x-1. If ABC\triangle A B C is isosceles where AB=BCA B=B C, find the lengths of all sides.

Solution

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Answered 2 years ago
Answered 2 years ago
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AB=BCx2x+5=5x4x26x+9=0(x3)2=0x=3AB=BC\\\\x^{2}-x+5=5x-4\\\\x^{2}-6x+9=0\\\\(x-3)^{2}=0\\\\x=3

Since AB = BC, set up an equation with and solve for x.

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