Which is equivalent to (4xy – 3z)2, and what type of special product is it?

16x2y2 + 9z2, the difference of squares

16x2y2 + 9z2, a perfect square trinomial

16x2y2 – 24xyz + 9z2, the difference of squares

16x2y2 – 24xyz + 9z2, a perfect square trinomial

Verified Answer :

(4xy - 3z)²

(4xy - 3z)(4xy - 3z)
4xy(4xy - 3z) - 3z(4xy - 3z)
16x²y² - 12xyz -12xyz + 9z²

16x²y² - 24xyz + 9z², a perfect square trinomial.


The correct option is \(\boxed{{\mathbf{Option D}}}\).


Further explanation:

The binomial algebraic expression is an algebraic expression that consists two terms and it is separated by plus or minus.


Binomial expression can be mathematically expressed as,

\(a + b\)


The trinomial algebraic expression is an algebraic expression that consists three terms and it is separated by plus or minus.


Trinomial expression can be mathematically expressed as,

\(a + b + c\)


Here, \(a,b{\text{ and }}c\) are the real numbers.


The square of the binomial \(a + b\) can be written as,

\({\left( {a + b} \right)^2} = \left( {a + b} \right)\left( {a + b} \right)\)


Given:


The given algebraic expression is \({\left( {4xy - 3z} \right)^2}\).


Step by step explanation:


Step 1:

The square of the binomial \(a + b\) can be written as,

\({\left( {a + b} \right)^2} = \left( {a + b} \right)\left( {a + b} \right)\)


Similarly, the expression \({\left( {4xy - 3z} \right)^2}\) can be written as,

\(\begin{aligned}{\left( {4xy - 3z} \right)^2} &= \left( {4xy - 3z} \right)\left( {4xy - 3z} \right) \\&= 4xy\left( {4xy - 3z} \right) - 3z\left( {4xy - 3z} \right) \\\end{aligned}\)


Step 2:

The distributive property can be used to solve the square of the binomial.


The distributive property can be expressed as,

\(a\left( {b + c} \right) = ab + ac\)


Now apply the distributive property to solve the expression \({\left( {4xy - 3z} \right)^2}\).

\(\begin{aligned}{\left( {4xy - 3z} \right)^2} &= 4xy\left( {4xy - 3z} \right) - 3z\left( {4xy - 3z} \right) \\&= 16{x^2}{y^2} - 12xyz - 12xyz + 9{z^2} \\&= 16{x^2}{y^2} - 24xyz + 9{z^2} \\\end{aligned}\)


Therefore, the expression \(16{x^2}{y^2} - 24xyz + 9{z^2}\) is the perfect square of the binomial \(\left( {4xy - 3z} \right)\).


The expression \(16{x^2}{y^2} - 24xyz + 9{z^2}\) is the trinomial.


Thus, option D a perfect square trinomial \(16{x^2}{y^2} - 24xyz + 9{z^2}\) is correct.


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Answer details:

Grade: Middle school

Subject: Mathematics

Chapter: Algebraic expression


Keywords: binomial, polynomial, algebraic expression, difference, product, trinomial, distributive property, equivalent, expression, terms, plus, separated, multiply, minus, addition