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# View of /trunk/NationalProblemLibrary/Rochester/setAlgebra03Expressions/lhp3_26.pg

Sun Mar 26 22:21:31 2006 UTC (7 years, 1 month ago) by jj
File size: 755 byte(s)
```Initial import
```

```    1 ##DESCRIPTION
2 ##  lhp3_26.pg.
3 ##ENDDESCRIPTION
4
5 ##KEYWORDS('algebra, polynomial operations')
6
7 DOCUMENT();
9            "PGchoicemacros.pl",
11            "PGauxiliaryFunctions.pl"
12 );
13
14 TEXT(beginproblem());
16
17 \$a1=random(2,5,1);
18 \$a2=random(2,10,1);
19 \$a3=random(2,10,1);
20 \$a4=random(2,10,1);
21 \$a5=random(2,10,1);
22 \$a6=random(2,10,1);
23 \$a7=random(2,10,1);
24 BEGIN_TEXT
25
26 The expression \(\$a1 (\$a2 x^2 -\$a3 x+\$a4)-(\$a5 x^2+\$a6 x-\$a7)\) equals \$BR
27 \{ans_rule(5) \}\( x^2 +\)\{ans_rule(5) \} \(x+\)\{ans_rule(5) \}
28 \$BR
29 END_TEXT
30
31 \$ans1 = \$a1*\$a2-\$a5;
32 \$ans2 = -\$a1*\$a3-\$a6;
33 \$ans3 = \$a1*\$a4+\$a7;
34
35 ANS(num_cmp([\$ans1,\$ans2,\$ans3], relTol=>.01));
36 ENDDOCUMENT();
```