Canonical URI: https://w3id.org/kmath/textbook_solution/chunjae_jeon_solution_body_p017_02
| rdf:type | math:TextbookSolution |
|---|---|
| rdfs:label | 천재전 p017 예제 1 풀이 |
| rdfs:comment | 천재전 공통수학1 본문 p017의 예제 1 풀이. |
| math:answerText | (1) \(x^2+y^2+4z^2-2xy-4yz+4zx\) (2) \(8x^3+36x^2+54x+27\) |
| math:explanationText | (1) \[ (x-y+2z)^2=x^2+(-y)^2+(2z)^2+2x(-y)+2(-y)2z+2(2z)x \] \[ =x^2+y^2+4z^2-2xy-4yz+4zx \] (2) \[ (2x+3)^3=(2x)^3+3(2x)^2\cdot3+3\cdot2x\cdot3^2+3^3 =8x^3+36x^2+54x+27 \] |
| math:mappingConfidence | 1.0 |
| math:pageStart | 17 |
| math:problem | textbook_problem:chunjae_jeon_vision_p017_02 |
| math:reviewStatus | reviewed |
| math:solutionKind | worked_solution |
| math:usesSolutionPattern | solution_pattern:expand_with_formula |