Question

➰ᴬ➰ᶦ➰ᵏ➰ᵃ➰

これであってるか確認して欲しいです💦
(並び替えも)

数Iプリント 整式5-2
1.次の計算をしよう。
(1) (2x-y-z)²
= (A-Z)
A²-2Az +2²
- (2x-y)-2z (2x-g) +2²
=
=4424x519-4x2 + 2zy122
4x²+y2122-4xy+2g2-42x
=
=
(2) (x+y-2)(x+y-4)
(A-2)(A-4)
A²-6A 18
= (x + y)²-6(x+y)+ 8
- X²₁ Ingry-bn-by 18
=
=
(3) (3a+b-c)(3a-b-c)
= (A+b) (A-b)
A²-6²
- (3a-c)²-b²
9a²-Bact²-b²
9a²-b²+ C²-bac
(4) (a-2b+3)²
= (A-2b)²
A²-4b+46²
- (0+3)²-4b(a133146²
a²+ 6a +9-4ab-12b +46²
= 0² +4b²-4ab+ba-126-19
=
H
(5) (x-3y-z)(x-3y+z)
(AZ) (41²)
A²-2²
(x-3y)-22
2
x² - 6xy + ay ² - Z²
= x² + Qy²-Z²-buy
(6) (x-2y-z)(x+3y-z)
= (A-2y)
(A-3y)
=
A²+ Ay - by²
= (x-2)² + y (x-Z) -by ²
€N²-2x2+Z+xy-zy (by) ²
= n²-by² + Z² + XY-ZZ +2zx
(7) (a+2b+3c)(a+2b+4c)
=
(A +3c) (A14c)
A²+7AC + 12 c
(a+b+7c10+26) +1200
+4₂b-7ac14b0+ (2)
=
=
a²+46 +12c²+4ab+14bc+ 7 ça
(8) (x+2y-3z)(x-2y-3z)
= (A + 2y) (A-2y)
= A²-4y²
=(x-3₂)²-48²
x² - 6x² + 9 2²-4 y²
x²³-4y² + 9x² - 6xz
=
=
(9) (x-4y+2z)²
(A-4y)²
A²-8Ay +16y²
= (x+2₂) ²-dy(x + 2z + 1 by ²
-(2²+4x² (42²-day-1b₂y + (by)
- x² +16y² +42² - 8 xy - 16y2 + 4276
〃

Answer 1

なゆた

全部合ってそう🙆