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(01.02)<object:standard:macc.912.a-sse.1.1b, macc.912.a-sse.1.2="">

Evaluate the following expression using the values given:

Find 2r2 + 3s3 - r2 + 4t2 - r2 if r = -2, s = -3, and t = 5.

-19

-37

27

19

 Jul 9, 2014

Best Answer 

 #3
avatar+118703 
+5

Hi goldenLeaf,

Questions like this need explanation.  They can get the answer out of the back of the book.

 

Find 2r2 + 3s3 - r2 + 4t2 - r2 if r = -2, s = -3, and t = 5.

 

2∗(−2)2+3∗(−3)3−(−2)2+4∗(5)2−(−2)2=2∗4+3∗−27−4+4∗25−4=8−81−4+100−4=19

 Jul 10, 2014

3+0 Answers

 #1
avatar+1006 
0

Huh... I got -1 from when you presented this the first time. Gimme a sec to redo.

 Jul 9, 2014
 #2
avatar+1006 
0

Okay Anon, if you want to go back for my work, it's in the first one with this problem. The answer is 19

 Jul 9, 2014
 #3
avatar+118703 
+5
Best Answer

Hi goldenLeaf,

Questions like this need explanation.  They can get the answer out of the back of the book.

 

Find 2r2 + 3s3 - r2 + 4t2 - r2 if r = -2, s = -3, and t = 5.

 

2∗(−2)2+3∗(−3)3−(−2)2+4∗(5)2−(−2)2=2∗4+3∗−27−4+4∗25−4=8−81−4+100−4=19

Melody Jul 10, 2014

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