Solve. Lets see if you know how to do this.(x+5)(x+5)

Mathematics

1 answer:

love history [14]3 years ago

6 0

For this problem you will need to use distribution. You will do X times X and get X^2. then X times 5 is 5X. Now you do 5 times X and get 5X. Lastly, you will do 5 times 5 and get 25. You then combine like terms and get X^2 + 10X + 25.

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A rectangle has an area of 171 square meters. Its width is ten meters less than the length. Find the measures of the length and

9966 [12]

Step-by-step explanation:

The area of a rectangle is 171 m²

Let l is the length and b is the width of the rectangle

It width is 10 m less than the length. So,

b = l-10 ...(1)

Area of a rectangle is given by :

$A=l\times b\\\\171=l(l-10)\\\\l^2-10l=171\\\\l^2-10l-171=0\\\\l^2-19l+9l-171=0\\\\\text{taking common together}\\\\l(l-19)+9(l-19)=0\\\\(l-9)(l-19)=0$