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Simplifying 5a2 + -4ab + -28b2 = 0 Reorder the terms: -4ab + 5a2 + -28b2 = 0 Solving -4ab + 5a2 + -28b2 = 0 Solving for variable 'a'. Factor a trinomial. (5a + -14b)(a + 2b) = 0Subproblem 1
Set the factor '(5a + -14b)' equal to zero and attempt to solve: Simplifying 5a + -14b = 0 Solving 5a + -14b = 0 Move all terms containing a to the left, all other terms to the right. Add '14b' to each side of the equation. 5a + -14b + 14b = 0 + 14b Combine like terms: -14b + 14b = 0 5a + 0 = 0 + 14b 5a = 0 + 14b Remove the zero: 5a = 14b Divide each side by '5'. a = 2.8b Simplifying a = 2.8bSubproblem 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 = {2.8b, -2b}
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