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Simplifying (a + 7)(a2 + -7a + 49) = 0 Reorder the terms: (7 + a)(a2 + -7a + 49) = 0 Reorder the terms: (7 + a)(49 + -7a + a2) = 0 Multiply (7 + a) * (49 + -7a + a2) (7(49 + -7a + a2) + a(49 + -7a + a2)) = 0 ((49 * 7 + -7a * 7 + a2 * 7) + a(49 + -7a + a2)) = 0 ((343 + -49a + 7a2) + a(49 + -7a + a2)) = 0 (343 + -49a + 7a2 + (49 * a + -7a * a + a2 * a)) = 0 (343 + -49a + 7a2 + (49a + -7a2 + a3)) = 0 Reorder the terms: (343 + -49a + 49a + 7a2 + -7a2 + a3) = 0 Combine like terms: -49a + 49a = 0 (343 + 0 + 7a2 + -7a2 + a3) = 0 (343 + 7a2 + -7a2 + a3) = 0 Combine like terms: 7a2 + -7a2 = 0 (343 + 0 + a3) = 0 (343 + a3) = 0 Solving 343 + a3 = 0 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '-343' to each side of the equation. 343 + -343 + a3 = 0 + -343 Combine like terms: 343 + -343 = 0 0 + a3 = 0 + -343 a3 = 0 + -343 Combine like terms: 0 + -343 = -343 a3 = -343 Simplifying a3 = -343 Reorder the terms: 343 + a3 = -343 + 343 Combine like terms: -343 + 343 = 0 343 + a3 = 0 The solution to this equation could not be determined.
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