Lucille Davidson

2021-12-18

Multiply, please: (a-b)(a-b)

servidopolisxv

Beginner2021-12-19Added 27 answers

Here you go:

$a\left(a\right)+a(-b)+(-b)a+(-b)(-b)=$

$={a}^{2}-ab-ba+{b}^{2}=$

$={a}^{2}-2ab+{b}^{2}$

Stella Calderon

Beginner2021-12-20Added 35 answers

You can use the FOIL method:

First multiply the first terms in (a-b)(a-b):

$a\left(a\right)={a}^{2}$

Add the products of the outside and inside terms:

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

Finally, add the product of the last terms:

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

First multiply the first terms in (a-b)(a-b):

Add the products of the outside and inside terms:

Finally, add the product of the last terms:

RizerMix

Expert2021-12-29Added 656 answers

You will get

Describe all solutions of Ax=0 in parametric vector form, where A is row equivalent to the given matrix

$$\left[\begin{array}{cccc}1& 3& 0& -4\\ 2& 6& 0& -8\end{array}\right]$$ Find, correct to the nearest degree, the three angles of the triangle with the given vertices

A(1, 0, -1), B(3, -2, 0), C(1, 3, 3)Whether f is a function from Z to R if

?

a) $f\left(n\right)=\pm n$.

b) $f\left(n\right)=\sqrt{{n}^{2}+1}$.

c) $f\left(n\right)=\frac{1}{{n}^{2}-4}$.How to write the expression ${6}^{\frac{3}{2}}$ in radical form?

How to evaluate $\mathrm{sin}\left(\frac{-5\pi}{4}\right)$?

What is the derivative of ${\mathrm{cot}}^{2}x$ ?

How to verify the identity: $\frac{\mathrm{cos}\left(x\right)-\mathrm{cos}\left(y\right)}{\mathrm{sin}\left(x\right)+\mathrm{sin}\left(y\right)}+\frac{\mathrm{sin}\left(x\right)-\mathrm{sin}\left(y\right)}{\mathrm{cos}\left(x\right)+\mathrm{cos}\left(y\right)}=0$?

Find $\mathrm{tan}\left(22.{5}^{\circ}\right)$ using the half-angle formula.

How to find the exact values of $\mathrm{cos}22.5\xb0$ using the half-angle formula?

How to express the complex number in trigonometric form: 5-5i?

The solution set of $\mathrm{tan}\theta =3\mathrm{cot}\theta $ is

How to find the angle between the vector and $x-$axis?

Find the probability of getting 5 Mondays in the month of february in a leap year.

How to find the inflection points for the given function $f\left(x\right)={x}^{3}-3{x}^{2}+6x$?

How do I find the value of sec(3pi/4)?