Let's find the expressions for the length and width of the rectangle. The length (which we will call <em>l</em>) is 2 units less than some undefined number, thus we will use the variable <em>x</em>:
l = x - 2

The width is 4 more than this length:
w = l + 4 = (x - 2) + 4 = x + 2

Now, given that we have the length and width and are looking for the area, we need to multiply these expressions together.

One way to write this would simply be (x + 2)(x - 2). If we wanted to find a different way of writing the area, we could use FOIL to find all terms and get x^2 - 4.

6 0

3 years ago

A gardener installed 42.6 meters of fencing in a week. He installed 13.45 on Monday and 9.5 meters on tuesday. He installed the

UNO [17]

6.55 meters of fencing he installed on eachof the last three days

<h3>Further explanation</h3>

Fraction numbers are known as numerator and denominator

On a number line, fractions are expressed in points that lie between two integers

The general form of fractions is A /B

Decimal numbers can be changed into mixed or ordinary fractions

Mixed fractions consist of integers and ordinary fractions

Decimal numbers have numbers in the form of thousands. Hundreds, tens, thousandths, hundredths, tenths and ones

The results of the division of decimal numbers with numbers 10,100,1000, 10000 and so on can be determined by shifting the comma to the left according to the number of zeros

If you divide a decimal number, you try to make the divisor an integer

Total fencing/week = 42.6 meters

Monday + Tuesday = 13.45+9.5 meters = 22.95 meters

so for 3 days (Wednesday-Friday) = 42.6 - 22.95 = 19.65 meters

Then on eachof the last three days : 19.65 : 3 = 6.55 meters

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