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Mathematics 20 Online
snowbell8963:

The area of a rectangle can be represented by the expression x^2+2x-3 If the dimensions of the rectangle are known to be the factors of the expression, write each dimension of this rectangle as a binomial. (Write the two binomial factors that you are mulitplying together to get the area).

snowflake0531:

So, you need to factor is this completely new? or have you learned it but just don't know how to do this specific problem

Serenity1jacksonsl:

i can help you

snowbell8963:

\(\color{#0cbb34}{\text{Originally Posted by}}\) @snowflake0531 So, you need to factor is this completely new? or have you learned it but just don't know how to do this specific problem \(\color{#0cbb34}{\text{End of Quote}}\) Ive learned it i just cant figure out this problem

snowflake0531:

Okay so we have \[x^2 + 2x-3\] What are the factors of -3, all of them

snowbell8963:

-1, -3

snowflake0531:

Actually, -1 and -3 would make is 3, instead of -3 So, we have either -1, 3, or 1, -3

snowbell8963:

oh ok

snowflake0531:

But because we need to make it 2x We need the two numbers added together be 2 So, which factor pair is it

snowbell8963:

-1 and 3

snowflake0531:

Yep, so we have (x-1)(x+3)

snowflake0531:

So there are your sides~

Serenity1jacksonsl:

\(\color{#0cbb34}{\text{Originally Posted by}}\) @snowflake0531 So, you need to factor is this completely new? or have you learned it but just don't know how to do this specific problem \(\color{#0cbb34}{\text{End of Quote}}\) you need to do this then find your number^^^^^

snowbell8963:

\(\color{#0cbb34}{\text{Originally Posted by}}\) @snowflake0531 Yep, so we have (x-1)(x+3) \(\color{#0cbb34}{\text{End of Quote}}\) and thats the answer?!

snowflake0531:

Yep, the sides are x-1 and x+3

snowbell8963:

\(\color{#0cbb34}{\text{Originally Posted by}}\) @snowflake0531 Yep, the sides are x-1 and x+3 \(\color{#0cbb34}{\text{End of Quote}}\) thank you so much!!

snowflake0531:

yw~!!

mikey3x:

x2+2x−3

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