Evaluating Expressions

Simplify

100

4x - 5 for x = 4

11

200

2a + 5 for a = 3

2 * 3 + 5 = 11

300

2y - 1 + y for y = 2

5

400

3(6 - b) - 2b for b = 4

3(6 - 4) - 2(4) = -2

500

n/4 + 2n - 3 for n = 8

8/4 + 2(8) - 3 = 15

Expressions w/Exponents

100

x^2 - 10 for x = 4

6

200

 5 + t^2 for t = 3

 5 + (3)^2 = 14

300

s^3 + 7 - 2s for s = 3

27+7-6= 28

400

x^3+ y^2 for x = 2, y = 5

(2)^3 + 5^2 = 33

500

2x^4 + 5L^7 - 6w^3 - 4m^2 for x = 3, L = 6, w = 4, m = 5

2(3)^4 + 5(7)^8 - 6(4)^3 - 4(5)^2 = 2(81) + 5(279936) - 6(64) - 4(25) = 162 + 1399680 - 384 - 100 = 1399358

Expressions

100

z^2  for z = 3

9

200

3x-4 for x is 3

3(3)- 4= 5

300

2L^2 - W for L = 5, W = 2

48

400

15a - 2b+4c where a = 3, b = 2, c=3

53

500

n^2/4 + 2m^3 - 85 for n = 8, m = 3

(8^2)/4 + 2(3)^3 - 85 = -15

Expressions w/Grouping Symbols

100

11 - 3z for z = 2

5

200

2(2 - p) for p = 4

2(2-4)=2(-2)=-4

300

3(23f - c)  f is 1 and c is 17

3(23(1)-(17))=3(6)=18

400

235(x-y) where x is 17 and y is 17

235(17-17)= 235(0)= 0

500

3(2f -4e)^2 - 5g + 6k/6 for f = 9, e = 8, g = 1, k = 6

3(2(9) - 4(8))^2 - 5(1) + 6(6)/6 = 589

Expressions w/Grouping Symbols

100

(n / 2) + 3 for n=50

28

200

(2x )^2 for x=5

(2(5))^2=(10)^2=100

300

10a - 2(b - c) for a = 2, b = 6, c = 4

10(2) - (6 - 4) = 18 

400

(2x + 3z)/12 where x is 3 and y is 2

(2(3) +3(2)) / 12 = 1

500

 3(2c - 5d)^2 for , c = 4, d = 3

 3(2(4) - 5(3)) = 3(8 - 15)^2= 3(-7)^2 = 10 + 3(49)=  147