Question

I will ask a question from you.
and I know you will solve this
question.
so,let's start.
(1)how to shutdown a laptop computer by using sortcut key.
(2)how to copy the line in laptop computer by using sortcut key.
(3)how to double screen in laptop computer by using sortcut key.



I know you can do it




































































​

Answer 1

Answer:

To solve the equation, factor x2−4x−5 using formula x2+(a+b)x+ab=(x+a)(x+b). To find a and b, set up a system to be solved.

a+b=−4ab=−5

Since ab is negative, a and b have the opposite signs. Since a+b is negative, the negative number has greater absolute value than the positive. The only such pair is the system solution.

a=−5b=1

Rewrite factored expression (x+a)(x+b) using the obtained values.

(x−5)(x+1)

To find equation solutions, solve x−5=0 and x+1=0.

x=5x=−1