When you solve the equation x + 1 = 2x for x, the solution is 1. 1) Square both sides of the equation, and verify that your solution satisfies the new equation. 2) Show that - 13 satisfies the new equation but not the original equation.

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2 November, 21:04

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Chiquita · Answer 1

(x + 1) ² = (2x) ²

(1 + 1) ² = (2 (1)) ²

2² = 2²

4 = 4

(-1 + 1) ² = (2 (-13)) ²

(-12) ² = (-26) ²

Not true

x = - 13 satisfies neither