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Answer:
x+2=0
x = -2
x²+5x+a = 0
-2²+5×-2 + a = 0
4-10+a = 0
-6+a = 0
a = 6
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Step-by-step explanation:
p(x) = x²+5x +a
x+2
Take x = -2
p(-2) = (-2)² + 5(-2) + a
= 4 + (-10) + a
= 4 - 10 + a
= -6 +a
Therefore,
a = 6
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