multiple the term using identies(x+7) (x+7)
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Answer:
x²+14x+49
Step-by-step explanation:
(x+7)(x+7)
=(x+7)²
=x²+2×(x)×7+7² [we know that (a+b)²=a²+2ab+b²]
=x²+14x+49
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