Question

What is the missing constant term in the perfect square that starts with x^2-4x

Answer 1

4 will be added to make the given expression a perfect square

Further explanation:

Given term is:

$x^2-4x$

As there is a square term and a linear term involving x, the expression will be completed using the formula

$a^2-2ab+b^2=(a-b)^2$

We know that

a^2=x^2

so,

$2ab=4x\\2xb=4x\\b=\frac{4x}{2x}\\b=2$

Adding (2)^2

$x^2-4x+(2)^2$

$x^2-4x+4$

4 will be added to make the given expression a perfect square

Keywords: Perfect square, polynomials

Learn more about perfect squares at:

• brainly.com/question/4703820
• brainly.com/question/4706270

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Answer 2

Answer:4 pleb

Step-by-step explanation: