1. 2α(α + 3) - 2(α2 + 3)=
2. 4(х - 6) + 4(х +6)=
3. - 6(2х - 4) - 4(3х + 6)=
4. 2(3х + 1) - 3(2х - 7)=
5. 4(х - 5) - 5(х -4)=
2. 4(х - 6) + 4(х +6)=
3. - 6(2х - 4) - 4(3х + 6)=
4. 2(3х + 1) - 3(2х - 7)=
5. 4(х - 5) - 5(х -4)=
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Объяснение:
1. =2а^2 + 6а - 2а^2 - 6=6а - 6
2. 4х - 24 + 4х + 24 = 8х
3. - 12х + 24 - 12х - 24 = - 24х
4. 6х + 2 - 6х + 21 = 23
5. 4х - 20 - 5х + 20 = - х
4х+4х=24-24
8х=0/:8
х=0
3. -12х+24-12х-24
-12х-12х=24-24
-24х=0/:(-24)
х=0
4. 6х+2-6х+21
6х-6х=-2-21
0=-22 (неверно)
5. 4х-20-5х+20
4х-5х=20-20
-х=0/:(-1)
х=0