Question

Evaluate given:

a = -5 b=7 b-a^2


a. 0
b. -1
c. -18
d. -4
e. 4


evaluate given:

x=4 y=-3 z=5 7x-y^2 + 2z

a. 11
b. 21
c. 23
d. 29
e. 54

evaluate given:

a=-4 b=-5 11-ab

a. -9
b. 14
c. 26
d. -8
e. 11

evaluate given:

m=-9 n=6 7+4n - m

a. 31
b. 40
c. 17
d. -18
e. -20

help please!

Answer 1

c , d , a , b

Explanation:

b - a² ( substitute given values for a and b into the expression )

= 7 - (- 5)²

= 7 - 25

= - 18 ← (c)

-------------------------

7x - y² + 2z ( substitute given values for x, y , z into the expression )

= 7(4) - (- 3)² + 2(5)

= 28 - 9 + 10

= 28 + 1

= 29 ← d

-------------------------------

11 - ab ( substitute given values for a and b into the expression )

= 11 - (- 4)(- 5)

= 11 - (+ 20)

= 11 - 20

= - 9 ← a

-----------------------------------

7 + 4n - m ( substitute given values for m and n into the expression )

= 7 + 4(6) - (- 9)

= 7 + 24 + 9

= 31 + 9

= 40 ← b