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OpenStudy (anonymous):
What value completes the square for the expression? x^2 + 14x
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OpenStudy (p0sitr0n):
+49
OpenStudy (anonymous):
so just 49 is the answer ?
OpenStudy (p0sitr0n):
assuming (x+7)^2
OpenStudy (p0sitr0n):
guess so
OpenStudy (tkhunny):
You must ponder this until you see it. (x+a)^2 = x^2 + 2ax + a^2 You have 2a = 14. You need a^2.
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