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Simplifying 7a2 + 2b2 + 15ab = 0 Reorder the terms: 15ab + 7a2 + 2b2 = 0 Solving 15ab + 7a2 + 2b2 = 0 Solving for variable 'a'. Factor a trinomial. (7a + b)(a + 2b) = 0Subproblem 1
Set the factor '(7a + b)' equal to zero and attempt to solve: Simplifying 7a + b = 0 Solving 7a + b = 0 Move all terms containing a to the left, all other terms to the right. Add '-1b' to each side of the equation. 7a + b + -1b = 0 + -1b Combine like terms: b + -1b = 0 7a + 0 = 0 + -1b 7a = 0 + -1b Remove the zero: 7a = -1b Divide each side by '7'. a = -0.1428571429b Simplifying a = -0.1428571429bSubproblem 2
Set the factor '(a + 2b)' equal to zero and attempt to solve: Simplifying a + 2b = 0 Solving a + 2b = 0 Move all terms containing a to the left, all other terms to the right. Add '-2b' to each side of the equation. a + 2b + -2b = 0 + -2b Combine like terms: 2b + -2b = 0 a + 0 = 0 + -2b a = 0 + -2b Remove the zero: a = -2b Simplifying a = -2bSolution
a = {-0.1428571429b, -2b}
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