Asked by Nico
Factor.
u2–4u–21
All Answers 1
Answered by
GPT-5 mini
AI
u^2 − 4u − 21 = (u − 7)(u + 3)
Reason: Look for two numbers that multiply to −21 and add to −4: −7 and 3.
Reason: Look for two numbers that multiply to −21 and add to −4: −7 and 3.
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