5z -18xy²

-z + 2ab , 3am , 5z -18xy²

5z -18xy² , -z + 2ab

5z -18xy² , 2zy , 3am

solution is a² + a + 5 and its solution at 1 is 5

solution is a³ + a + 5 and its solution at 1 is -5

solution is a³ + a² + 5 and its solution at 1 is 12

solution is a³ + a² + a+ 5 and its solution at 1 is 8

8p² +14p - 15

8p² - 14p - 15

8p² -14p + 15

-8p² - 14p - 15

7m + 2m² + 5

7m - 2m² + 5

7m² + 2m + 5

7m² + 2m - 5

2a - 8b - 4c

2a + 8b + 4c

2a + 8b + 4c

2a - 8b + 4c

200

150

276

189

( a-b) (a + b) = a² -b² , 2499

(x + a) ( x + b ) = x² + (a + b) x ab , 2499

(a+b)² = a² + 2ab + b² , 2499

(a - b)² = a² - 2ab + b² , 2499

12

12p

12q

-12

11b +10a + 1

11a -10b + 1

11a +10b + 1

11a +10b - 1

b² - 4b + 14

b² + 4b + 14

b² + 4b - 14

b² - 4b - 14

 $\frac{4m}{2}+2mn\ +\ \frac{9n}{4}$  

 $\frac{4m^2}{2}\ +\ 2mn\ +\ \frac{9n^2}{4}$  

 $\frac{4m^2}{9}+\ 2mn\ +\ \frac{9n^2}{4}$  

 $\frac{4m^2}{9}-\ 2mn\ \ +\ \frac{9n^2}{4}$