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Which of these are conceptual signs?

Find the product.    (5t5z6)(5t2z2)

Subtract.      (8×2 – 4x + 5) – (3×2 – 2x – 4)

Simplify the expression.    

Divide and simplify.    

Divide to determine the remainder. Just enter the remainder!!!   Be sure to write your answer as a number and use the “-” sign if you think the answer is negative. (x3 + 2×2 + 3x + 1)  (x + 1) 

Find the domain.     f(x) = x2 + 5

What is the value of “x” in the given equation? Be sure to write your answer as a number and use the “-” sign if you think the answer is negative.   

Multiply and simplify where possible.