2x - 8 = 0
2x = 8
x = 4
4x + 3 = 0
4x = - 3
x = - 3 /4 = - 0,75
1. (a+b)c=ac+bc
<span>2. (a-b)c=ac-ab</span>
1
18+6√2+1-2*3√2=19+6√2-6√2=19
2
0,5(x²-64)≤0
0,5(x-8)(x+8)≤0
x=8 x=-8
x∈[-8;8]
3
(x^-4y³)^-1=x^4*y^-3=x^4/y³
4
1-2√p+p=(1-√p)²
5
-15(2x-4)≥0
(2x-4)≤0
2x≤4
x≤2
x∈(-∞;2]