Find the quadratic equation whose roots are c and -c

x² - c² = 0

x² + 2cx = 0

x² + 2cx + c² = 0

x² - 2cx + c² = 0

Correct answer is A

Explanation

Roots; x and -c

sum of roots = c + (-c) = 0

product of roots = c x -c = -c²

Equation; x² - (sum of roots) x = product of roots = 0

x² - (0)x + (-c²) = 0

x² - c² = 0

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