The formula for (a-b)^2 is a^2-2ab+b^2.
(x-2)^2=x^2-2*x*(-2)+4
=x^2+4x+4
i solved...
Mathematics, 23.09.2019 17:30 rockinrachel9099
The formula for (a-b)^2 is a^2-2ab+b^2.
(x-2)^2=x^2-2*x*(-2)+4
=x^2+4x+4
i solved this. why is not correct to take the second number negative? i mean, the solution for the exercise is x^2-4x+4. why is it negative instead of positive?
Answers: 1
Another question on Mathematics
Mathematics, 21.06.2019 15:00
Pls me this is due today and i need i will make brainliest if you me answer correctly and i will report if you try to give me a dumb answer.
Answers: 3
Mathematics, 21.06.2019 17:20
Which of these equations, when solved, gives a different value of x than the other three? a9.1 = -0.2x + 10 b10 = 9.1 + 0.2x c10 – 0.2x = 9.1 d9.1 – 10 = 0.2x
Answers: 1
Mathematics, 21.06.2019 19:30
Jada has a meal in a restaurant she adds up the prices listed on the menu for everything they ordered and gets a subtotal of $42.00. after tax the total is 45.99. what percentage of the subtotal is the total?
Answers: 2
You know the right answer?
Questions
Biology, 04.10.2020 17:01
Spanish, 04.10.2020 17:01
Mathematics, 04.10.2020 17:01
Biology, 04.10.2020 17:01
Mathematics, 04.10.2020 17:01
History, 04.10.2020 17:01
Social Studies, 04.10.2020 17:01
English, 04.10.2020 17:01
