Question

efectuati (5-2x) la puterea a 2

Answer 1

${(5 - 2x)}^{2} = {5}^{2} - 2 \times 5 \times 2x + {(2x)}^{2}$

$= 25 - 20x + 4 {x}^{2}$

Answer 2

25-2×2x×5+4x la a 2a
25-20x+4x pătrat