Question

rut gon A=(2x-2)^2-4x(x-2)+46

Answer 1

\(A=\left(2x-2\right)^2-4x\left(x-2\right)+46\)

\(\Leftrightarrow A=4x^2-8x+4-4x^2+8x+46\)

\(\Leftrightarrow A=50\)

Answer 2

\(A=\left(2x-2\right)^2-4x\left(x-2\right)+46\)

\(A=4x^2-8x+4-4x^2+8x+46\)

\(A=50\)

Chúc bạn học tốt!!!

Answer 3

A = (2x - 2)² - 4x(x - 2) + 46

=> A = 4x² - 8x + 4 - 4x² + 8x + 46

=> A = (4x² - 4x²) + (-8x + 8x) + 4 + 46

=> A = 50