(5×+1/2)²pakai cara ya

(5x + 1/2)²
= 25x² + 5x + 1/4
munggunakan metode (a+b)² = a² + 2ab + b²

(5×+1/2)²
= (5x + 1/2) . (5x + 1/2)
= ( 5x . 5x ) + ( 5x . (1/2) ) + ( 1/2 . 5x ) + ( (1/2) . (1/2) )
= 25x² + (5/2)x + (5/2)x + 1/4
= 25x² + (10/2)x + (1/4)
= 25x² + 5x + (1/4)