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Missing problem for Book CCA2 => Chapter Ch12 => Lesson 12.1.2 => Problem 12-34

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To check a division problem using multiplication, multiply the divisor by the quotient. In the second case, multiply (x − 1)(x + 1). Does it equal x2 − 1? How will you check the third and fourth cases?

Look for a pattern in the quotients. Look at the number of terms and the exponent each term.