x2 - 41 cannot be factorised.
(x + 7)(x - 9)
This equation does not equal a number, but it can be factorised. x2-xy-20y2=(x-5y)(x+4y)
10
x2-6x+9 = (x-3)(x-3) when factorised.
x2 - 41 cannot be factorised.
x^2-x+1 cannot be factorised
(5x-9)(2x-1) when factored
(x-9)(x+1)
x^2 - y^2 - 4 is in its simplest form.
(x + 7)(x - 9)
This equation does not equal a number, but it can be factorised. x2-xy-20y2=(x-5y)(x+4y)
x2 + 7x - 56 cannot be factorised.
10
x2-6x+9 = (x-3)(x-3) when factorised.
x=9 squared
3 squared = 9 4 squared = 16 9 x 16 = 144 3 squared x 4 squared = 144