2 years ago

Factor this trinomial. x2+3x-4

2 answers:

8 0

x² + 3x - 4
rewrite with two middle terms that add to give three but multiply to yield -4
x² + x - 4x - 4

by factorizing
x(x + 1) - 4(x + 1)

⇒ (x - 4) (x + 1) = x² + 3x - 4

trapecia [35]2 years ago

4 0

Answer:

(x - 1)(x + 4)

Step-by-step explanation:

So basically, we need two numbers that add to get 3 and multiply to get -4.

We can use -1 and 4.

-1 + 4 = 3

-1 * 4 = -4

So, this makes it true.

Best of Luck!

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