How many squares equals 121!
Therefore (± 11) & sup2; = 121, that is, the square of 11 or - 11 equals 121
Is there a solution to square x minus x equal to minus two?
x²-x=-2
x²-x+2=0
b²-4ac=1-8<0
The original equation has no real solution
The square of the sum or difference of two numbers is equal to the addition or subtraction of the two numbers, which can be expressed as
Complete this formula
(a-b)^2=a^2-2ab+b^2
(a+b)^2=a^2+2ab+b^2
^2 means square