Factor 17x² + 65x + 62

Here we will show you how to factor the quadratic function 17x² + 65x + 62 using the box method. In other words, we will show you how to factor 17x squared plus 65x plus 62 (17x^2 + 65x + 62) using the box method. It is a 5-step process:

Step 1: The standard form of a quadratic equation is ax² + bx + c. We start by labeling the different parts of our equation 17x² + 65x + 62, like this:

a = 17
b = 65
c = 62

Step 2: Next, we need to draw a box and divide it into four squares:

31	31x	62
17x	17x²	34x
	x	2

We put 17x² (a) in the bottom left square and 62 (c) in the top right square, like this:

31	31x	62
17x	17x²	34x
	x	2

Step 3: In order to fill in the other two squares, we need to do some math. We have to find two numbers that multiply together to give us the product of 17 times 62 (a × c), and add together to equal 65 (b).

More specifically, 17 times 62 is 1054. Therefore, we need to find the two numbers that multiply to equal 1054, and add to equal 65.

? × ? = 1054
? + ? = 65

After looking at this problem, we can see that the two numbers that multiply together to equal 1054, and add together to equal 65, are 31 and 34, as illustrated here:

31 × 34 = 1054
31 + 34 = 65

Now, we can fill in the last two squares in our box with 31x and 34x. Place 31x in the upper left square, and place 34x in the lower right square.

31	31x	62
17x	17x²	34x
	x	2

Step 4: Next, we need to find four final numbers to finish factoring our equation. We can see that our box is a 2 x 2 table made up of rows and columns.

Our goal is to find the numbers that, when multiplied together, result in the products in each square. We can do this by finding the greatest common factor in each row.

Let’s look at the top row. We have the terms 31x and 62. The greatest common factor of 31x and 62 is 31. Therefore, we write 31 to the left of the top row. You can see it here in the color green:

31	31x	62
17x	17x²	34x
	x	2

Next, let’s look at the bottom row. We have the terms 17x² and 34x. The greatest common factor of 17x² and 34x is 17x. Therefore, we write 17x to the left of the bottom row. You can see it here in the color blue:

31	31x	62
17x	17x²	34x
	x	2

To find the values below the table, we first divide 17x² by 17x (labeled in blue). This gives us x.

17x² ÷ 17x = x

You can see this value colored in orange below:

31	31x	62
17x	17x²	34x
	x	2

Next, we divide 34x by 17x (labeled in blue). This gives us 2.

34x ÷ 17x = 2

You can see this value colored in purple below:

31	31x	62
17x	17x²	34x
	x	2

Step 5: Now we have all of the information we need to finish factoring the equation. The values outside of the box are used to factor 17x² + 65x + 62. You simply put the values on the left in one set of parentheses, and the values below in another set of parentheses, to get the answer:

(17x + 31)(x + 2)

That’s it! Now you know how to factor the equation 17x² + 65x + 62.

Factoring Quadratics
Go here if you want to learn how to factor another quadratic function.

Factor 17x² + 66x - 95
Here is the next quadratic function on our list that we have factored for you.