Question

Desarrolle: 2(x+3)² + (x+7)(7-x)​

Answer 1

${x}^{2} + 12x + 67$

Answer 2

2x²+67

Explicación paso a paso:

2(x+3)²+(x+7)(7-x)

2(x²+9)+x+7×7-x

2x²+18+x+49-x

2x²+67