Question

Find the product by using identity (5a – 3b) (25a2 +15ab + 9b2)

Answer 1

Answer:

5a(25a²+15ab+9b²)-3b(25a²+15ab+9b²)

= 125a³+75a²b+45ab²-75a²b+45ab²+27b³

=125a³+90ab²+27b³

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Answer 2

Answer: a^3–b^3 = (a–b) (a^2+ab+b^2 )

125a^3 - 27b^3 = (5a – 3b) (25a^2 +15ab + 9b^2)

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