1.Լուծիր հավասարումը՝
ա) 3(x − 2) = 8;
3*x-2=8
3 * x = 3x
3 * 2 = 6
3x = 8 + 6 = 14
x = 14/3
բ) (x + 2)4 = 7;
x + 2 * 4 = 7
x * 4 = 4x
4 * 2 = 8
4x = 7 — 8 = -1
x = -1/4
գ) (2x + 1)9 = 9;
2x + 1 * 9 = 9
9 * 2x = 18x
18x = 9 — 9 = 0
x = 0
դ) 5(2 − 3x) − 7 = 0;
5 * 2 — 3x — 7 = 0
5 * 2 = 10
5 * -3x = -15x
-15x = 10 — 7 = 3
x = 3/-15
ե) 3(x − 5) + 8 = 17;
3 * x — 5 + 8 = 17
3 * x = 3x
3 * -5 = -15
3x = 17 + 15 — 8 = 24
x = 14/3
զ) 6(x − 3) + 2(x + 2) = 10;
6x — 18 + 2x + 4 = 10
6x + 2x = 10 + 18 — 4
8x = 24
x = 24 : 8 = 3
x = 3
ը) 5(x − 1) − 4(x − 2) = 10:
5x — 5 — 4x — 8 = 10
5x — 4x = 10 + 5 + 8
x = 23
2. ա) 324 : 4 * 3 = 12
բ) 432
գ) 2.5/4
3.
4.ա)52
բ)3330
5. ա) 5,2
բ) 200
Արփինե Խաչատրյանի բլոգ 