Simplify: (3a² + 5a - 7)(a - 1) - (a² - 2a + 3)(a + 4)
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Answer:
=2a^3-7a-17
Step-by-step explanation:
=3a^3+5a^2-7a -3a^2_5a-7 -a^3+2a^2-3a-4a^2+8a-12
=2a^3+7a^2-7a^2 -10a +3a -17
=2a^3-7a-17
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