Question

Упрости 4sin^2a + 4cos^2a + 1

Answer 1

$4sin^2 alpha +4cos^2 alpha +1=4(sin^2 alpha +cos^2 alpha )+1=4bullet1+1=4+1=5.$

Answer 2

= 4 * ( Sin^2a + Cos^2a ) + 1 = 4 * 1 + 1 = 4 + 1 = 5 ; Ответ 5