A) take each variable and multiply it with the other side. so x*x and x*1, and 1*x and 1*1, then add them together. Our answer is x^2 + 2x +1
B)Same thing as A, but replace the ones with fives. x*x, x*5, x*5 and 5*5. Our answer is x^2 + 10x +25
C) We take the same thing as B, but slap a negative sign in front of the fives. x*x, x*-5,x*-5 and -5*-5. x^2 -10x +25
