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
1 answer:
Answer:
{x +4} {x+3} =0
Step-by-step explanation:
The equation is given as :
x² + 7x + 12 =0
Find multiples of 12 that can add to give +12 ------3 * 4
The equation can then be written as;
x² + 3x + 4x + 12 = 0 ------factorize
x{ x + 3 } + 4 { x +3 } = 0
{x+4 } {x + 3} = 0
Answer : {x +4} {x+3} =0
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