Respuesta :
Answer:
R= {-7,-2}
Step-by-step explanation:
- divide 14 into 2 and 7 because 2x7=14
- write the equation as a multiplication of (x+7) and(x+2) =0
- for the result to equal zero. at least one of the factors must equal zero, therefore we get two solutions

Answer:
x^2+9x+14=0
x^2+7x+2x+14=0
x(x+7)+2(x+7)=0
(x+7)(x+2)=0
x+7=0
x+2=0
X=-7
x=-2