what number must be added to x^2+20×+___ to make it perfect square trinomial?
a. 100
b.50
c.150
d.200
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what number must be added to x^2+20×+___ to make it perfect square trinomial?
a. 100
b.50
c.150
d.200
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Answer:
A. 100
Step-by-step explanation:
X²+20x+100
(x+10)(x+10)