Evaluating Expressions

Simplify

100

4x - 5 for x = 4

4*4 - 5 = 11

200

2a + 5 for a = 3

2 * 3 + 5 = 11

300

3(2y - 1) + 6 for y = 2

3(2 (2) - 1) + 6 = 15

400

3(6 - b) + 7 - 2b for b = 4

3(6 - 4) + 7 - 2(4) = 5

500

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

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

Expressions w/Exponents

100

6x^2 - 10 for x = 4

6(4)^2 - 10 = 86

200

4(t) + 5 + t^2 for t = 3

4(3) + 5 + (3)^2 = 26

300

3s^3 + 7 - 2s for s = 4

3(4)^3 + 7 - 2(4) = 191

400

x^3+ y^2 - z^1 for x = 2, y = 5, z =4

22(2)^3 + 5^2 - 4^1= 37

500

5x^2+3y-4z, x=4 y=5 and z=2

87

Expressions w/Grouping Symbols

100

(11 - 3z) + x + y for z = 2, x = 9, y = 5

(11 - 3(2)) + 9 + 5 = 19

200

3p - 2(r - q) for p = 4, r = 5, q = 3

3(4) - 2(5 - 3)= 12 - 2(2) = 12 - 4 = 8

300

(14f - 6c) + e^8 for f = 1, c = 117, e = 2

(14(1) - 6 (117)) + 256 = -432

400

2(y^5 - h^2 - 3j) + 2k for y = 4, h = 6, j = 7, k = 8

2((4)^5 - (6)^2 - 3(7)) + 2(8) = 1950

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) + 3m for n=50, m=15

(50 / 2) + 3(15) = 60

200

3(2x - 1)^4 + 6y - 9z for x=5, y=7, z= 8

3(2(5) - 1)^4 +6(7) - 9(8) = 3(10-1)^4 + 42 - 72 = 3(9)^4 + 42 - 72 = 19683 + 42 - 72 = 19653

300

10a - (b - c)^5 for a = 7, b = 6, c = 4

10(7) - (6 - 4)^5 = 70 - (2)^5 = 70 - 32 = 38

400

(2x + 3z)^4 / 12 for

(2(5) +3(3))^4 / 12 = 10860.08333

500

b + 3(2c - 5d)^2 for b= 10, c = 4, d = 3

10 + 3(2(4) - 5(3)) = 10 + 3(8 - 15)^2= 10 + 3(-7)^2 = 10 + 3(49)= 10 + 147 = 157