Question

упростите выражение 3(а-2)^2+12а

Answer 1

$3( {a - 2)}^{2} + 12a = 3( {a}^{2} - 4a + 4) + 12a = 3 {a}^{2} - 12a + 12 + 12a = 3 {a}^{2} + 12 = 3( {a}^{2} + 4)$

Answer 2

$3(a - 2) {}^{2} + 12a = 3a {}^{2} - 12a + 12 + 12a = 3 {a}^{2} + 12=3({a}^2+4)$