2y²+8y²=0
2y(y+4)=0
2y=0 y=4
y=0
3a) C⁴ * C⁷ :C⁹ = C⁴⁺⁷⁻⁹ = C²
б) (a⁴)³ * a = a¹² * a = a¹³
в) (- 2x)⁴ = 16x⁴
4a) 20³ * 0,5³= (20 * 0,5 )³ = 10³ = 1000
б) (4 * 2⁵) / 2⁷ = (2² * 2⁵) / 2⁷ = 2⁷ / 2⁷ = 1
5) [(y²)³]⁴ = (y⁶)⁴ = y²⁴
1) a) a¹²*b^6*c³
b) b^8*a
c) a²
d) a⁴/(b²c)
2) a) 12bc
b) -ac/3
c) -45a³c
d) -ab³/12
e) 10a²c^6
3) a) 2a²+2ab
b) x³y+4x²
c) y³+4xy-3y
d) -a²+b+c
e) x^5y²-x²y³
f) x³y³+x⁴y^5-x³y³+x³y⁴=x⁴y^5+x³y⁴
g) -3x³+3xy+2x³+2x²y²=3xy-x³+2x²y²
4) a) x²y²-x³+y³-xy
b) -6a³-2a²+6a²+3a=-6a³+4a²+3a
c) 4ab+3a²-4b²-3ab=3a²+ab-4b²
d) -2a³-2a²b-ab-b²
e) (-3a³+12ab-2a²b+8b²)(a+4b)=-3a⁴-12a³b-12a²b+48ab²-2a³b-8a²b²+8b²a+32b³=-3a⁴-14a³b-12a²b+56ab²-2a³b-8a²b²+32b³
5х^3(х^2-1)
5х^3*х^2-5х^3
5х^5-5х^3
1) =2√5-5√5+9√5=6√5
2)=4а+10а-9а=5а
3)=4*3√3b-5*4√3b+1/4*8√3b=
=12√3b-20√3b+2√3b=-6√3b