1) 3b^3+a^3
2) -2a^2x-3a^4
3)25sr+54rs^2
4)30p^4+3p^3
5)9xy
6)4p+22p^4-p^6+8
7)3.6x^4-1.3x^5+2x-4.1
1). x+y=0
3x-y=4
x=-y
3x-y=4
3×(-y)-y=4
-3y-y=4
-y=4
y=-4
x=4 Ответ:x=4 y=-4
2) 2x+3y=6
3x-y=9
2x+3y=6
y=-9+3x
2x+3×(-9+3x)=6
2x-27+9x=6
11x=33
x=3
y=-9+3×3
y=0 Ответ x=3 y=0
<span>3x³ - 27 x = 0</span> /:3
x<span>³ - 9x </span>= 0
x ( x - 3)(x + 3) = 0
x = 0
x = 3
x = - 3
Х^2-8х+16=(х-4)^2=(х-4)*(х-4)
= X^2 + 16X + 64 + X^2 + 16X = 2X^2 + 32X + 64