Si A 1 2x22 3 x - 1 y B 4 x52 - 5x 6 37 calcule A - 2B.

Apuntes

• Subtopic: Calculation of A - 2B Given: A = 2x² + x - 1 B = x² - 5x + 3 First, calculate 2B: 2B = 2(x² - 5x + 3) = 2x² - 10x + 6 Now, find A - 2B: A - 2B = (2x² + x - 1) - (2x² - 10x + 6) Distribute the subtraction: = 2x² + x - 1 - 2x² + 10x - 6 Combine like terms: (2x² - 2x²) + (x + 10x) + (-1 - 6) = 0 + 11x - 7 **Final result: 11x - 7** **Answer: A) 11x - 7**