divide b2 -14b + 49 by b-7
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Step-by-step explanation:
we observed that,
b²=(b)²
-14b=-1×7×2
49 = 7²
A/q
require identity is
(a+b)²= a²-2ab+b²
therefore,
b²-14b+7²
b²-7²
(b-7)²
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