Q1 - Using more than one letter and powers .: Online homework:.

Work out the value of these expressions.

 

 

9(p - q) when p = 14 and q = 6

 

2ab + 6c when a = 3, b = 2 and c = 9

 

92 - tuv when t = 3, u = 7 and v = 4

 

r

st when r = 96, s = 3 and t = 4

 

a

28 - b when a = 72, and b = 8

 

2

3m When m = 3

 

2 2

54 - 3s + t when s = 3 and t = 6

 

 

Q2 - Using Negatives

Work out the value of these expressions.

 

pgr when p = -3, q = 4 and r = -5

 

-5(a - b) when a = 2 and b = -4

 

2

4s - st when s = -3 and t = -6

 

5c - de when c = 7, d = 5 and e = -4

 

2 2

p + 5q when p = -10 and q = -4

 

mn

4p when m = -12, n = 18 and p = -1

 

2

b 2

2

ad When a = -3, b = 4, c = -9 and d = -4

 

 

 

Can you please help me I have no clue how to do these at all.

 

 

!

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It seems like you just need to plug in the value they give you for each letter and simplify.

 

For instance, if they give you something like 9 + a and tell you a = 3, then you'll plug in 3 for a, giving you 9 + 3, which equals 12.

 

Try a few, maybe post your results, and if you're still having trouble, then we'll see what we can do.

Edited November 5, 201312 yr by John