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What is the product of [tex]\((4y - 3)(2y^2 + 3y - 5)\)[/tex]?

A. [tex]\(8y^3 + 3y + 15\)[/tex]
B. [tex]\(8y^3 - 23y + 15\)[/tex]
C. [tex]\(8y^3 - 6y^2 - 17y + 15\)[/tex]
D. [tex]\(8y^3 + 6y^2 - 29y + 15\)[/tex]


Sagot :

Let's find the product of the polynomials [tex]\((4y - 3)\)[/tex] and [tex]\((2y^2 + 3y - 5)\)[/tex].

Given the polynomial expression:
[tex]\[ (4y - 3)(2y^2 + 3y - 5) \][/tex]

To find the product, we'll use the distributive property (also known as the FOIL method for binomials):

1. First, distribute [tex]\(4y\)[/tex] across the second polynomial:
[tex]\[ 4y \cdot (2y^2 + 3y - 5) = 4y \cdot 2y^2 + 4y \cdot 3y + 4y \cdot (-5) \][/tex]
Which simplifies to:
[tex]\[ 8y^3 + 12y^2 - 20y \][/tex]

2. Next, distribute [tex]\(-3\)[/tex] across the second polynomial:
[tex]\[ -3 \cdot (2y^2 + 3y - 5) = -3 \cdot 2y^2 + (-3) \cdot 3y + (-3) \cdot (-5) \][/tex]
Which simplifies to:
[tex]\[ -6y^2 - 9y + 15 \][/tex]

3. Now, combine all the terms we obtained:
[tex]\[ (8y^3 + 12y^2 - 20y) + (-6y^2 - 9y + 15) \][/tex]

4. Combine the like terms:
[tex]\[ 8y^3 + (12y^2 - 6y^2) + (-20y - 9y) + 15 \][/tex]
Which simplifies to:
[tex]\[ 8y^3 + 6y^2 - 29y + 15 \][/tex]

Therefore, the product of the polynomials [tex]\( (4y - 3) \)[/tex] and [tex]\( (2y^2 + 3y - 5) \)[/tex] is:
[tex]\[ \boxed{8y^3 + 6y^2 - 29y + 15} \][/tex]

So, according to the given options, the correct answer is:
[tex]\[ 8y^3 + 6 y^2 - 29 y + 15 \][/tex]