1
а²в²(а²+3ав-в²)=а⁴в²+3а³в³-а²в⁴
2
-m (m-2)+5m²(1-3m) =-м²+2м+5м²-15м³=4м²+2м-15м³=м (4м+2-15м²)
3.
6 (5х-4)-3 (3х-2)=5.
30x-24-9x+6=5.21x=5+1821x=23x=23/21=1 ц 2\21
4.
7х+5/5 - 3х+1/2=1.4х+1+1/2=1
4х=1- 1 ц 1/2
4х=-1/2
х=-1/2 :4
х=-1/8
1. a^2*b^2(a^2+3ab-b^2)=a^4*b^2-a^2*b^4+3a^3*b^3
2. -m(m-2)+5m^2(1-3m)=-m^2+2m+5m^2-15m^3=-15m^3+4m^2+2m.3.
30x-24-9x+6=5.21x-18=521x=23x=23/214.14x+10-15x-5=10-x+5=10-x=5x=-5.
1
а²в²(а²+3ав-в²)=а⁴в²+3а³в³-а²в⁴
2
-m (m-2)+5m²(1-3m) =-м²+2м+5м²-15м³=4м²+2м-15м³=м (4м+2-15м²)
3.
6 (5х-4)-3 (3х-2)=5.
30x-24-9x+6=5.
21x=5+18
21x=23
x=23/21=1 ц 2\21
4.
7х+5/5 - 3х+1/2=1.
4х+1+1/2=1
4х=1- 1 ц 1/2
4х=-1/2
х=-1/2 :4
х=-1/8
1. a^2*b^2(a^2+3ab-b^2)=a^4*b^2-a^2*b^4+3a^3*b^3
2. -m(m-2)+5m^2(1-3m)=-m^2+2m+5m^2-15m^3=-15m^3+4m^2+2m.
3.
30x-24-9x+6=5.
21x-18=5
21x=23
x=23/21
4.
14x+10-15x-5=10
-x+5=10
-x=5
x=-5.