4(a+5b)
To factorise the expression (70a - 20b - 10c), first identify the greatest common factor (GCF) of the coefficients, which is 10. Then, factor out 10 from the entire expression: [ 70a - 20b - 10c = 10(7a - 2b - c). ] Thus, the factorised form is (10(7a - 2b - c)).
4
-(5b - 4)(25b2 + 20b + 16)
4(4b + 5)(16b2 - 20b + 25)
24ab - 42ax - 20b + 35x = 6a(4b - 7x) - 5(4b - 7x) = (4b - 7x)(6a - 5)
12a + 6b + 9a + 14b =(12a + 9a) + (6b + 14b) =21a + 20b
no
If it's a Conn trumpet, it's the model number. The Conn 20B is a student model horn.
40b2
20b rotary
20B to 20 KB
The Electric Company - 1971 20B 6-20 was released on: USA: 12 November 1976