Answers edited by Aria
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How do you combine like terms in #(y ^ { 2} - 15y + 20) + ( - y ^ { 2} + 8y - 16)#?
How do you factor completely: #x^2 + 5x + 6#?
How do you differentiate #f(x)=sec(3x^3-x^2 ) # using the chain rule?