Think of a whole number Subtract 2. Take the original number and add to find the product of the numbers. Subtract the square of the original number use polynomials to show how this number trick works

Question

Mathematics

Pamela Casey

20 August, 22:57

Think of a whole number Subtract 2. Take the original number and add to find the product of the numbers. Subtract the square of the original number use polynomials to show how this number trick works

+3

Answers (1)

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Franco · Answer 1

(x - 2) (x + 2) - x^2?=? - 4

Let's simplify the left hand side.

(x - 2) (x + 2) - x^2

x^2 - 2x + 2x - 4 - x^2

(x^2 - x^2) + (-2x + 2x) + (-4)

0 + 0 + - 4

-4