Clover999
Clover999
02-05-2016
Mathematics
contestada
What's...factorise: 25x²-y²?
Respuesta :
rachelbentley20
rachelbentley20
02-05-2016
Factorising an equation is putting it into bracket form.
This has square numbers and so needs double brackets
(5x - y) (5x+y)
If you then check this by multiplying the brackets out again you will get:
5x^2 - 5xy + 5xy - y^2
The positive and negative 5xy's cancel each other out and you are left with its original form. Your answer is
(
5x - y) (5x+y)
Answer Link
VER TODAS LAS RESPUESTAS ( 37+ )
Otras preguntas
How do you find the difference temperature that begins at 14 degrees but drops to -25 degrees by evening?
When Anne begins to think about a boy friend, someone in turn drives her to think about Peter van Daan. Who? Peter Wessel Miep de Jong Harry Goldberg
Which of the following is NOT a characteristic of scientific knowledge? Scientific knowledge can change. Scientific knowledge is durable in most cases. Scientif
How has art changed in the last few decades in your country ielts?
I don't know how to do this :(
Suppose U={1,2,3,4,5,6,7,8} is the universal set and P={2,4,6,8}. Then what is the complement of P?
Please solve! I will mark brainliest if correct!
Please help me with this question thx
what did many families do in ancient Rome when they had no son to carry on the family name
FAST ANSWERS ONLY PLEASE HELP
