1. Evaluate each of the following using identities: (k) (x+7)(x+5)
please help me this question plz!!!
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Answer:
x²+2x-35
Step-by-step explanation:
using identity x²+(a-b)x+ab
using identity x²+(a-b)x+abx²+(7-5)x+7×5
using identity x²+(a-b)x+abx²+(7-5)x+7×5x²+2x+35
using identity x²+(a-b)x+abx²+(7-5)x+7×5x²+2x+35That's the solution.
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