Question

The trinomial x2 – 3x – 4 is represented by the model. an algebra tile configuration. 0 tiles are in the factor 1 spot and 0 tiles are in the factor 2 spot. 10 tiles are in the product spot in 2 columns with 5 rows: 1 is labeled x squared, 1 is labeled x, the 4 tiles below x squared are labeled negative x, and the 4 tiles below the x tile are labeled negative. what are the factors of the trinomial? (x 1) and (x – 4) (x 4) and (x – 1) (x 5) and (x – 4) (x 4) and (x – 5)

Answer 1

Trinomial is an expression. The factors of the given trinomial x²-3x-4 are (x+1)(x-4).

What is a trinomial?

An algebraic expression with three non-zero terms and more than one variable is known as a trinomial.

To know the factors of the trinomial, we need to find the factors of the given trinomial. therefore, we need to divide the middle term of the trinomial into two parts, such that the sum of that two terms is the middle term(-3x), while their product is equal to the product of the first and the last term(ac=-4x²).

Later on, we need to take the common terms out of the first two and the last two terms.

$x^2-3x-4\\\\= x^2-4x+x-4\\\\=x(x-4)+(x-4)\\\\=(x+1)(x-4)$

Hence, the factors of the given trinomial x²-3x-4 are (x+1)(x-4).

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