Question

x²- 4x - 5 pls answer this question frnds ​

Answer 1

Answer:

(x+1)(x−5)

Step-by-step explanation:

Let's factor x2−4x−5

x2−4x−5

The middle number is -4 and the last number is -5.

Factoring means we want something like

(x+_)(x+_)

Which numbers go in the blanks?

We need two numbers that...

Add together to get -4

Multiply together to get -5

Can you think of the two numbers?

Try 1 and -5:

1+-5 = -4

1*-5 = -5

Fill in the blanks in

(x+_)(x+_)

with 1 and -5 to get...

(x+1)(x-5)

Answer 2

Answer:

x^2 - 4x - 5 = 0

x^2 - 5x + x - 5 = 0

x(x-5) +1(x-5) = 0

(x+1)(x-5) = 0

x = -1,5

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