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Question
Use the direct method to evaluate the following products:
(a – 8) (a + 2)
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Solution
Step 1: Multiply each term in the first bracket by each term in the second bracket
= a(a + 2) − 8(a + 2)
Step 2: Simplify each multiplication
= (a2 + 2a) − (8a + 16)
Step 3: Combine like terms
= a2 + 2a − 8a − 16
= a2 − 6a − 16
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