If p(x) = x2 - 1 and 9(x)= 5(x-1), which expression is equivalent to (p-q)(x)? 5(x - 1) – x2-1
(5x - 1) - (x2 - 1)
(x2 - 1) -5(x - 1)
(x2 - 1) – 5x - 1

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step-by-step explanation:

in problems involving proportions, we can use cross products to test whether two ratios are equal and form a proportion. to find the cross products of a proportion, we multiply the outer terms, called the extremes, and the middle terms, called the means.

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