Register
Can some one help please help me
17.3k views
5 votes
Can some one help please help me

Can some one help please help me-example-1
User Odinthenerd
by
4.1k points

1 Answer

2 votes

Answer:

7

Step-by-step explanation:

equation: x(x-2)=2x+21

find x:
x^(2) -4x -21 = 0

(-b +/-
\sqrt{b^(2) - 4ac }) /2a

(4 +/-
\sqrt{(-4)^(2) - 4(1)(-21)} ) /2(1)

(4 +/- 10) /2

= -3 and 7

-3 obviously does not work, but 7 does

User Chad Pavliska
by
4.4k points
Ask a Question
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

4.7m questions

6.0m answers

Other Questions

Which of the following is not one of the part of speech
Consider: Some people Africa are carriers for Ebola. Therefore, all flights originating in Africa should be restricted from entering the United States. This is an example of which common fallacy? A) begging
Who has disappeared? A. Bosche B. Kraler C. Dussel D. Koophius
Read the excerpt from a student’s essay. From the beginning, Rainsford is an individual who enjoys the hunt and wastes no thought on the animals he kills. On the boat, Whitney expresses some empathy
Which thesis statement is well worded? A) five percent of the federal budget should be used to make businesses more energy efficient to prevent an energy crisis. B) At least 26% of the federal budget should
Link Copied!