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Elina [12.6K]
2 years ago
5

Factorise15 a^3 b - 35ab^3​

Mathematics
2 answers:
IRISSAK [1]2 years ago
8 0

Answer:

15 a^3 b - 35ab^3

taking common

5ab(3a²-7b²)

dsp732 years ago
7 0

Answer:

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

Step-by-step explanation:

<h3>to understand this</h3><h3>you need to know about:</h3>
  • factoring
<h3>tips and formulas:</h3>
  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
<h3>given:</h3>
  • 15a³b-35ab³
<h3>let's solve:</h3>
  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

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C

Step-by-step explanation:

(2x + 3)^5 = C(5,0)2x^5*3^0 +

C(5,1)2x^4*3^1 + C(5,2)2x^3*3^2 + C(5,3)2x^2*3^3 + C(5,4)2x^1*3^4 + C(5,5)2x^0*3^5

Recall that

C(n,r) = n! / (n-r)! r!

C(5,0) = 1

C(5,1) = 5

C(5,2) = 10

C(5,3) = 10

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