Identify binomial and formula: Identify the binomial to be squared and the special case formula to use.The given expression is (m+3)2, which is a binomial squared. The special case formula for the square of a binomial is (a+b)2=a2+2ab+b2.
Identify values of a and b: Identify the values of a and b in the binomial.In the expression (m+3)2, a is m and b is 3. We will use these values in the special case formula.
Apply special case formula: Apply the special case formula to the binomial.Using the values of a and b, we expand (m+3)2 using the formula (a+b)2=a2+2ab+b2.(m+3)2=m2+2(m)(3)+32
Simplify expanded expression: Simplify the expanded expression.Now we simplify the terms in the expression:m2+2(m)(3)+32= m2+6m+9
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