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Simplifying (r + -3)(r + 3) = -16 Reorder the terms: (-3 + r)(r + 3) = -16 Reorder the terms: (-3 + r)(3 + r) = -16 Multiply (-3 + r) * (3 + r) (-3(3 + r) + r(3 + r)) = -16 ((3 * -3 + r * -3) + r(3 + r)) = -16 ((-9 + -3r) + r(3 + r)) = -16 (-9 + -3r + (3 * r + r * r)) = -16 (-9 + -3r + (3r + r2)) = -16 Combine like terms: -3r + 3r = 0 (-9 + 0 + r2) = -16 (-9 + r2) = -16 Solving -9 + r2 = -16 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '9' to each side of the equation. -9 + 9 + r2 = -16 + 9 Combine like terms: -9 + 9 = 0 0 + r2 = -16 + 9 r2 = -16 + 9 Combine like terms: -16 + 9 = -7 r2 = -7 Simplifying r2 = -7 Reorder the terms: 7 + r2 = -7 + 7 Combine like terms: -7 + 7 = 0 7 + r2 = 0 The solution to this equation could not be determined.
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