Y(x)=x²|x³|+x⁴
y(-x)=(-x)²*|(-x)³| +(-x)⁴ = x²*|-x³| + x⁴ = x²|x³| +x⁴ = y(x)
y(-x)=y(x) => y(x) - чётная
-7x+13=5x-71
-7x-5x=-71-13
-12x=-84
x=7
Х(6х+3)=0
х=0
6х+3=0
х=-0,5
<span>0.6<span>x2</span> - 3.6x = 0</span>
<span><span>D = (-3.6)2 - 4·(0.6)·0</span> = 12.96</span>
<span><span><span>x1 = </span><span>3.6 - √12.96 /</span> 0</span>2·(0.6)=0</span>
<span><span><span>x2 = </span><span>3.6 + √12.96</span> /</span><span>2·(0.6) = 6
</span></span>