If X + Y = 1 and Xy = -12; Find: X2 - Y2. - Mathematics

If x + y = 1 and xy = -12; find:
x² - y².

Sum

x² - y²
= (x + y) (x - y)
= (1) (±7)
= ±7.

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Chapter 4: Expansions - Exercise 4.1

Chapter 4 Expansions
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