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In how many distinct ways can the letters of the word SELLS be arranged? Is it okay to be 13 in 6th grade? If f(x) = -x³ + x² + x, find f(-2)? Please solve and explain math help Solve the equation using the appropriate property.
3(2a+6)+8a=10(a−1)−3a? What would happen if we launched all our nuclear weapons at the sun?