Answer:
16. 0
17. 16
18. 12
19. 7
20. -36
21. -75
22. -24
23. 13x
24. 2xy
25. -6y
26. 50x^2y^2
27. -2x^3
28. 10x^2y^3 - 10x^3y^3
29. 7x + y
30. x
Step-by-step explanation:
16.
x + 6 when x = -6
-6 + 6 = 0
17.
24 - 4y when y = 2
24 - 4(2)
24 - 8 = 16
18.
a + a^2 when a = 3
3 + 3^2
3 + 9 = 12
NOTE: wag magpapalito sa 3^2 and 3(2) okkie...
kapag 3^2 ibig sabihin 3×3 which is 9 habang yung 3 (2), imumultiply mo lang yung 3 sa 2 which is 6
19.
7m + 6n when m = 1 and n = 0
7 (1) + 6 (0)
7 + 0 = 7
NOTE: any number multiplied by 0 is always 0
20.
-9s + 9 when s = 5
-9(5) + 9
-45 + 9 = -36
21.
8x - 3 when x = -9
8 (-9) - 3
-72 - 3 = -75
NOTE: pareho silang may negative sign kaya pinag-add
22.
ab + cd when a = -3 , b = 4 , c = -4 , d = 3
-3 (4) + (-4)3
-12- 12 = -24
yung sa "B" since iaadd and subtract lang yung may kaparehang term, wag gagalawin yung variables or yung letters, yung iaadd and subtract lang is yung coefficients which is yung mga number bago yung variables. Ginagalaw lang yung variables pag multiplicaton yung ginagamit okkie :)
