Question

AYUDA por favor.................​

Answer 1

Respuesta:

a = 2; b = 5; c = -3; d = -1; f = 0

21. 5a^2 - 2bc - 3d

5(2^2) - 2(5)(-3) - 3(-1)

20 + 30 + 3

53

22. 4ab - 3bc - 15d

4(2)(5) - 3(5)(-3) - 15(-1)

40 + 45 + 15

100

23. 6a^3f

6(2^3)(0)

0

24. 2a^2 - b^3 - c^3 - d^5

2(2^2) - (5^3) - ((-3)^3) - ((-1)^5)

8 - 125 + 27 + 1

-89

25. 3(a - b) + 2(c - d)

3(2-5) + 2(-3 - (-1))

-9 - 4

-13

26. (b + c)^2

(5 + (-3))^2

2^2

4

Espero te sirva