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Question

Solve x + 2x+9=13


Solution

Solve x +2x+9 = 13

2x+9=13 - x

Squaring on both sides

2x + 9 = (13 – x)2

x2– 28x + 160 = 0

(x – 8)(x – 20) = 0

x = 8, 20

(x – 8)(x – 20) = 0

x = 8, 20

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