4m-(m+3)²+(m-3)(m+3)= 4m-(m²+9+6m)+ m²-9= 4m-m²-9-6m+m²-9= -2m-18= -2(m+9)= -2(-2,4+9)= -2*6,6= -13,2
T(4.9u+1.4v-4.9p) вот в десятичных
Х град - 2 и 4 угол
4х град - 1 и 3 угол
<1+<2=180
х+4х=180
5х=180
х=180:5
х=36 град - <2 и <4
180-36=144 град - <1 и <3
<span>2<span>a^3</span>+<span>a^2</span>−1−3<span>a^2</span>+<span>a^3</span>−a=</span><span>3<span>a^3</span>−2<span>a^2</span>−1−a=</span><span><span>3<span>a^3</span>−2<span>a^2</span>−a−1</span></span>