(−9)−(−4)\left(-9\right)-\left(-4\right)(−9)−(−4)
(−9)−(−6)\left(-9\right)-\left(-6\right)(−9)−(−6)
8−(−1)8-\left(-1\right)8−(−1)
−5−9-5-9−5−9
3−(−6)3-\left(-6\right)3−(−6)
−1+3-1+3−1+3
Special products is the multiplication of algebraic expressions that follow certain rules and patterns, so you can predict the result without necessarily doing the multiplication.
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