HELP!! Find the product. (6a + b)2 1. 12a2 + ab + b2 2. 36a2 + ab + 36b2 3. 36a2 + 12ab + b2 4. 36a2 + b2
1 answer:
Answer:
option 3
Step-by-step explanation:
Given
(6a + b)²
= (6a + b)(6a + b)
Each term in the second factor is multiplied by each term in the first factor, that is
6a(6a + b) + b(6a + b) ← distribute both parenthesis
= 36a² + 6ab + 6ab + b² ← collect like terms
= 36a² + 12ab + b²
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Step-by-step explanation:
6(2x -11) 15 =21
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12x -66 + 15 = 21
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12x -51 = 21
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21 + 51 = 72
12x = 72
12x ÷ 2 = 0
72 ÷ 12 = 6
x = 6
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