And x ²- 2xy + y²
Please explain how you did it
This would factorise into (x+(5/2))^2
remember (a+b)^2 = a^2 + 2ab.+ b^2
LE Grant's answer is right up to the last line.
It's not (2x + 5)^2 aas that would multiply out to 4x^2 + 20x +25 but note every factor is four times what it should be, therefore you can express it as (1/4)(2x+5)^2.
(x - y)^2
25/4 = (5/2)^2
5 = 2 * 5/2
x^2 + 5x + 25/4 = (x + (5/2))^2
Note: this would usually be in the form (2x + 5)^2
Comments
This would factorise into (x+(5/2))^2
remember (a+b)^2 = a^2 + 2ab.+ b^2
LE Grant's answer is right up to the last line.
It's not (2x + 5)^2 aas that would multiply out to 4x^2 + 20x +25 but note every factor is four times what it should be, therefore you can express it as (1/4)(2x+5)^2.
(x - y)^2
25/4 = (5/2)^2
5 = 2 * 5/2
x^2 + 5x + 25/4 = (x + (5/2))^2
Note: this would usually be in the form (2x + 5)^2