- Math Probability help How do I solve these two problems and what are the answers please.?

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How would the expression (x^2+4)(y^2+4) be rewritten using Two Squares? In the x column, begin at -2, increment by 1 and finish at 2 (41 rows).In the y column, use above formula, referencing appropriate x-value.? The reaction of hydrogen (H2) and propene using a platinum catalyst is called? Polynomial Identities question? How many kilometers in a meter?