Percy's work is incorrect.
The correct way to solve the equation x^2 + 7x + 12 = 12 is:
1. x^2 + 7x + 12 = 12
2. x^2 + 7x = 0
3. x(x + 7) = 0
4. x = 0 or x = -7
So, the correct solutions to the equation are x = 0 or x = -7. Percy's answer of x = 9 or x = 8 is incorrect.
Percy solved the equation x2 + 7x + 12 = 12. His work is shown below. Is Percy correct? Explain.
1. (x + 3)(x + 4) = 12
2. x + 3 = 12 or x + 4 = 12
3. x = 9 or x = 8
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