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When we encounter a multiplication exercise of this type, we know that we must use the distributive property.
Step 1: Multiply the first factor of the first parentheses by each of the factors of the second parentheses.
Step 2: Multiply the second factor of the first parentheses by each of the factors of the second parentheses.
Step 3: Group like terms.
a * (c+3) =
a*c + a*3
4 * (c+3) =
4*c + 4*3
ac+3a+4c+12
There are no like terms to simplify here, so this is the solution!
\( (3+20)\times(12+4)= \)
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