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Factorise
15 a^3 b - 35ab^3​


Factorise15 A3 B 35ab3 class=

Sagot :

Answer:

15 a^3 b - 35ab^3

taking common

5ab(3a²-7b²)

Answer:

[tex] \huge \boxed{ \boxed{ \red{3ab(5 {a}^{2} - 7 {b}^{2} )}}}[/tex]

Step-by-step explanation:

to understand this

you need to know about:

  • factoring

tips and formulas:

  1. therefore are many ways to factor. In this question to factor we just need to figure out GCF of the following expression
  2. factor out the GCF

given:

  • 15a³b-35ab³

let's solve:

  1. rewrite 15a³b as 3×5×a×a×a×b
  2. rewrite -35ab³ as -1×7×5×a×b×b×b
  3. therefore the GCF of the expression is 5ab
  4. let's factor out 5ab:5ab(3a²-7b²)

and

we are done