Tolong di jawab beserta jalannya.(7-2x)x(2x-7)=

(7 - 2x)(2x - 7)
= (7 × 2x) + (-2x × 2x) + (7 × -7) + (-2x × -7)
= 14x - 4x² - 49 + 14x
= - 4x² + 28x - 49

(7-2x) (2x-7)
14x - 49 - 4x² + 14x
-4x² + 28x - 49