Question

розкласти на множники 324-(3х+12)^2​

Answer 1

$324 - {(3x + 12)}^{2} = 324 - (9 {x}^{2} + 2 \times 3x \times 12 + 144) = 324 - 9 {x}^{2} - 72x - 144 = - 9 {x}^{2} - 72x + 180$