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2. (a+6)²=a²+12a+36
3. (3m+4)²=9m²+24m+16
4. (3x+y)²=9x²+6xy+y²
(a + b)² = a² + 2ab + b²
(2 + m)² =
2² + 2(2)(m) + m² =
4 + 4m + m²
(a + 6)² =
a² + 2(a)(6) + 6² =
a² + 12a + 36
(3m + 4)² =
(3m)² + 2(3m)(4) + 4² =
3²m² + 24m + 16 =
9m² + 24m + 16
(3x + y)² =
(3x)² + 2(3x)(y) + y² =
3²x² + 6xy + y² =
9x² + 6xy + y²