Question

Multiply.
(x+2)(x-5)
Simplify your answer.

Answer 1

@jdoe0001 can you help me please

Answer 2

Do you know the FOIL method?

Answer 3

yes but its really confusing

Answer 4

Ok, let's just take it one step at a time. We need to multiply to first term of each binomial together first.

Answer 5

\(\large {
(x+2)(x-5)\implies
\begin{array}{llll}
x+2
\\ \quad \\
\times x

\\\hline\\

\end{array}+\begin{array}{llll}
x+2
\\ \quad \\
\times -5

\\\hline\\

\end{array}
}\)

or use the FOIL method http://www.mathsisfun.com/definitions/foil-method.html

Answer 6

*multiply the

Answer 7

so x(x) = x^2

Answer 8

I don't understand :-/

Answer 9

Yep, first is x*x which is x^2

Answer 10

Now the O represents the outside terms. So the terms on the front and back end.

Answer 11

is it x^2 + 5x - 2x + 10?

Answer 12

Close, you got + 5x correct, but for the last 2 terms, it should be 2*x and 2*-5

Answer 13

x^2+3x-5?

Answer 14

What is 2*x

Answer 15

Yeah you're really close to the answer

so first we multiply x*x = x^2
next you would multiply x*-5 = -5x
then you would multiply 2*x= 2x
and lastly you would multiply 2*-5= -10

SO then you would add up all the terms you found together: (x^2) + (-5x) + (2x) + (-10)
Which equals (x^2) - 3x - 10

[Think of the distributive property] With a bit more practice it'll get easier and easier for you :)