That would depend on the value of 56 which has not been given.
x times x
x times x x multiplied by itself
find factors of -3 (3 & -1 ) also add together to get 2 (for the 2x part) put x on both sides (x+3) (x-1) << because xsquared means x times x check it 3 times -1 = -3 3 times x = 3x -1 times x = -1x x times x = xsquared = xsquared + 2x -3 hope this helped =)
(x - 20)(x - 20)
x times x = 25 x = 5
y2-x2 = (y+x)(y-x)
x^3 - 121x
(x - 7)(x + 2)
You would multiply x by x which means xsquared, and then multiply that by two. Which is 2xsquared.
(x + 4)(x + 1)
-9
xsquared minus x minus 72