Question

(3y-7x)^2 producto notable

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Answer 1

(3y - 7x)² = 9y² - 42yx + 49x²

Explicación:

Aplicar la formula del binomio al cuadrado: (a - b)² = a² - 2ab + b²

• a = 3y
• b = 7x

(3y - 7x)² = (3y)² - 2(3y)(7x) + (7x)²

(3y - 7x)² = 9y² - 42yx + 49x²