What is the sum of x^2+4x-5=0

Posted on


What is the sum of x^2+4x-5=0​

Answer:

Step-by-step explanation:

x 2 −4x−5=0

1 Factor {x}^{2}-4x-5x 2 −4x−5.

1 Ask: Which two numbers add up to -4−4 and multiply to -5−5?-5−5 and 11

2 Rewrite the expression using the above.

(x-5)(x+1)

(x−5)(x+1)

To get access to all How? and Why? steps, join Cymath Plus!

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

(x−5)(x+1)=0

2 Solve for xx.

1 Ask: When will (x-5)(x+1)(x−5)(x+1) equal zero?

When x-5=0x−5=0 or x+1=0x+1=0

2 Solve each of the 2 equations above.

x=5,-1

x=5,−1

To get access to all How? and Why? steps, join Cymath Plus!

x=5,-1

x=5,−1


Leave a Reply

Your email address will not be published.