Factoring Trinomials with the X Method | #Algebra

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Alternatively, you can begin by factoring the x^2 quantity. 3x^2 can only be broken down into 3x and x. The largest number we can take from 17 that is divisible by 3 is 15, giving us 5 and a remainder of 2. Therefore, one potential answer would be (3x + 2)(× + 5). Checking the last term confirms this, since 5 × 2 = 10. However, if the last term were 20, we could simply check the next value that is divisible by 3 we can take from 17, which would be 12, giving us 4 and a remainder of 5. And so on. For simple factoring problems like this, this technique has the advantage of being something you can do entirely in your head, without visual references.

thassalantekreskel
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Thanks bruh I got a quiz on this in 30 minutes

jacksonkemp