Polynomials and Rational Expressions Question
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Grade 11 Polynomials and Rational Expressions CCSS: HSA-APR.C.4
Is the following proof correct? If not, identify the first step that has an error.
Prove: (n+2)2-n2=4n+4
Left Side: (n+2)2-n2
Step 1 ( (n+2)+n )( (n+2)-1 )
Step 2 (2n+2)(2)
Step 3 4n+4
Prove: (n+2)2-n2=4n+4
Left Side: (n+2)2-n2
Step 1 ( (n+2)+n )( (n+2)-1 )
Step 2 (2n+2)(2)
Step 3 4n+4
- The proof is correct.
- Step 1 has an error.
- Step 2 has an error.
- Step 3 has an error.