Wiskunde.net

17.
a. 2 ⋅ 2 ⋅ 3 ⋅ p ⋅ q
b. 2 ⋅ 2 ⋅ 5 ⋅ p ⋅ q ⋅ q
c. 11 ⋅ x ⋅ y ⋅ y
d. 5 ⋅ 5 ⋅ x ⋅ x ⋅y
e. 2 ⋅ 2 ⋅ 2 ⋅ 3 ⋅ x ⋅ x ⋅ x ⋅ y ⋅ y
f. 3 ⋅ 7 ⋅ x ⋅ x ⋅ y ⋅ z ⋅ z ⋅ z

18.
a. x² - 5x
b. 3x + 33
c. 3a² - 2ab
d. 15a² + 3a
e. x³ - 8x²
f. -2x² + 14x

19.
a. b(8a + 9) = 8ab + 9b
b. x(2x + 1) = 2x² + x
c. a(3b + 1) = 3ab + a
d. x(5x - 3) = 5x² - 3x

20.
a. 2(2x + 3y)
b. x(4 - y)
c. x(x + 18)
d. 2(p - 3)
e. p(q + r)
f. x(x - 5)
g. x(3x + 5)
h. x(7y - 20)
i. b(8a - 3)

21.
a. b(a - 6c)
b. a(a + 1)
c. b(a² - 3)
d. x(7 - yz)
e. 2(7p - 4q)
f. 2(9x² + 5yz)

22.
a. 6pq - 30p = p(6q - 30)
b. 6pq - 30p = 6(pq - 5p)
c. 6pq - 30p = 2p(3q - 15)
d. 6pq - 30p = 6p(q - 5)

23.
a. 3a(b + 3)
b. 3b(4a - 3)
c. 3a(a + 2)
d. 3(a² - 2b)
e. 3a(b - 1)
f. 3a(b - 3c)
g. 4xy(3z - 4)
h. 2x(y + 4z)
i. 5x²(1 - 3x)

24.
a. 6x(x² - 2)
b. 5x(5x - 6)
c. 5x²(2 + y)
d. 3x²(2x² - 1)
e. 6abc(3a + 2b)
f. x²(x² - x + 1)
g. xy(4x + 1 - y)
h. 2x⁵(6x³ + 9x - 8)
i. 3pq²r(3p² - 2r²)