{"id":"cb_practice_pdf:t5-math-m2-q17","source_id":"cb_practice_pdf","source_item_id":"t5-math-m2-q17","external_id":null,"ibn":null,"question_id":null,"program":"SAT","module":"math","domain_code":null,"domain":null,"skill_code":null,"skill":null,"difficulty":null,"score_band":null,"answer_type":"mcq","answer_source":"rationale","layout_warning":"Part of this question was typeset outside the text flow — a fraction, subscript or similar — and PDF extraction re-inserted it in the wrong place. The wording is reliable; the symbols may be out of order.","form_id":"cb_practice_pdf:test-5","module_number":2,"position":17,"stem":"Which expression is equivalent to 8x^3 +8 − −2 x^3? 8x^3 +6","stimulus":"","stimulus_html":null,"stem_html":"<p>Which expression is equivalent to 8x^3 +8 − −2 x^3? 8x^3 +6</p>","rationale_html":"<p>8 3+8- 3- -2 Choice B is correct. The given expression is equivalent to x x ^ h, or 8 3+8- 3+2 7 3+10 x x . Combining like terms in this expression yields x . 8 3+8 -2 Choice A is incorrect. This expression is equivalent to ^ x h , not 8 3+8 - 3-2 ^ x h ^x h. Choice C is incorrect. This expression is equivalent to 8 3+8 - -2 8 3+8 - 3-2 ^ x h ^ h, not ^ x h ^x h. Choice D is incorrect. This expression 8 3+8 - 3+2 8 3+8 - 3-2 is equivalent to ^ x h ^x h, not ^ x h ^x h.</p>","correct_answer":["B"],"has_media":false,"has_mathml":false,"has_table":false,"source_created_at":null,"source_updated_at":null,"options":[{"label":"A","content_html":"","ord":0},{"label":"B","content_html":"<p>7x^3 +10 8x^3 +10</p>","ord":1},{"label":"C","content_html":"","ord":2},{"label":"D","content_html":"<p>7x^3 +6</p>","ord":3}],"attribution":{"source_id":"cb_practice_pdf","source_name":"College Board full-length SAT practice tests (PDF)","rights_holder":"College Board","canonical_url":"https://satsuite.collegeboard.org/practice/practice-tests/paper","retrieved_from":"https://satsuite.collegeboard.org/practice/practice-tests/paper","attribution":"Full-length SAT practice tests 4–11 © College Board, published free at satsuite.collegeboard.org.","disclaimer":"Extracted from PDF layout: equations, figures and tables do not survive intact. Use the original PDFs for anything the text renders poorly. SAT® is a trademark registered by the College Board, which is not affiliated with and does not endorse this project.","license":"College Board copyright. Free to download; not licensed for redistribution.","redistributable":false,"item_count":905}}