А) 5^3+(-3)^3=125-27=98
б) (9+(-11))^3=(9-11)^3=(-2)^3=-8
в) 12^2-8^2=144-64=80
г) (96-(-4))^2=(96+4)^2=(100)^2=10000
д) 2*(7)^2*(-5)^2=2*49*25=2450
е) 3*15*(4)^2=3*15*16=720
S=30cm², c=60cm, a=2cm ,beta=?
c.v/2=30,c.v=60, v=60/c=60/60=1 ,v=1 cm
sin beta = 1/2, β=30°
Napicyj kartinky, kge cdelaeš vycotu v iz točki na ctopony c treygolnika.
Iz vicoti v i ctoponi BC imeeš 1/2=sinβ.
10x^2+16x-512+5x^2+80x+320=15x^2+96x-192=3(5x^2+32x-64)