What is the area of a triangle with base 14 cm and height 9 cm?

A = ½ × 14 × 9 = ½ × 126 = 63 cm².

Simplify: (x³ · x⁴) / x²

x³ · x⁴ = x⁷. Then x⁷ ÷ x² = x^(7-2) = x⁵.

C = 2πr = 2 × 3.14 × 7 = 43.96 cm.

x² - 9 = x² - 3² = (x - 3)(x + 3).

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Solve for x: 3x² - 12 = 0