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anyanavicka [17]
2 years ago
11

What is the product of (y+3)(y^2-3y+9)

Mathematics
2 answers:
alina1380 [7]2 years ago
8 0
(y+3)(y^2-3y+9)
=y(y^2-3y+9)
+3(y^2-3y+9)
=(y^3-3y^2+9y)+(3y^2-9y+27)
=y^3-3y^2+9y+3y^2-9y+27
=y^3+27
jarptica [38.1K]2 years ago
3 0

Answer:

Option (a) is correct.

The product of the given expression \left(y+3\right)\left(y^2-3y+9\right) is y^3+27

Step-by-step explanation:

Given : Expression \left(y+3\right)\left(y^2-3y+9\right)            

We have to find the product of the given expression \left(y+3\right)\left(y^2-3y+9\right)

Consider the given expression \left(y+3\right)\left(y^2-3y+9\right)

Apply distributive law,

(a+b)(c+d)=ac+ad+bc+bd, we have,

=yy^2+y\left(-3y\right)+y\cdot \:9+3y^2+3\left(-3y\right)+3\cdot \:9

Simplify, we have,

=y^2y-3yy+9y+3y^2-3\cdot \:3y+3\cdot \:9

Also,

=y^3-3y^2+9y+3y^2-9y+27          

Adding similar terms, we have,

=y^3+27

Thus, The product of the given expression \left(y+3\right)\left(y^2-3y+9\right) is y^3+27

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