385,443 views
7 votes
7 votes
Your class mate was asked to square (2x - 3) , he answered 4x² - 9 . is his answer correct?

User Chenny
by
2.7k points

1 Answer

17 votes
17 votes
Answer:

His answer is incorrect

The correct answer is:


4x^2-12x+9

This is the square of (2x - 3)

Step-by-step explanation:

Given (2x - 3)

The square of this is:


\begin{gathered} (2x-3)^2 \\ =4x^2-12x+9 \end{gathered}

His answer of 4x² - 9 is incorrect.

User Yunus D
by
2.9k points