3ab - 6b + 4a2 - 8a in the form of factors is :
(a + 2)(4a + 3b)
(a - 2)(4a + 3b)
(a - 2)(4a - 3b)
(a + 2)(4a - 3b)
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3ab - 6b + 4a2 - 8a
= 3b(a - 2) + 4a(a - 2)
= (a - 2)(3b + 4a).
Hence, Option 2 is the correct option.
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8(x - y) + 5(y - x) in the form of factors is :
3(x + y)
13(x - y)
3(x - y)
13(x + y)
Factorise by taking out the common factors :
xy(3x2 - 2y2) - yz(2y2 - 3x2) + zx(15x2 - 10y2)
2x(a - b) + 3y(5a - 5b) + 4z(2b - 2a)