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Solve by applying the zero product property. \[ 15 m(m+3)=14 m-10 \] If there is more than one solution, separate the answers with commas.

Ask by Bradley Ellis. in the United States
Jan 25,2025

Real Tutor Solution

Tutor-Verified Answer

Answer

\( m = -\frac{5}{3},\ -\frac{2}{5} \)

Solution

To solve the equation \( 15m(m + 3) = 14m - 10 \) using the zero product property, follow these steps: 1. **Expand and Rearrange the Equation:** First, move all terms to one side of the equation to set it to zero. \[ 15m(m + 3) - 14m + 10 = 0 \] Expand the left side: \[ 15m^2 + 45m - 14m + 10 = 0 \] Combine like terms: \[ 15m^2 + 31m + 10 = 0 \] 2. **Factor the Quadratic Equation:** To factor \( 15m^2 + 31m + 10 \), look for two numbers that multiply to \( 15 \times 10 = 150 \) and add up to \( 31 \). These numbers are \( 6 \) and \( 25 \). Rewrite the middle term using these numbers: \[ 15m^2 + 6m + 25m + 10 = 0 \] Factor by grouping: \[ 3m(5m + 2) + 5(5m + 2) = 0 \] Factor out the common term \( (5m + 2) \): \[ (3m + 5)(5m + 2) = 0 \] 3. **Apply the Zero Product Property:** Set each factor equal to zero: \[ 3m + 5 = 0 \quad \text{or} \quad 5m + 2 = 0 \] Solve for \( m \): \[ m = -\frac{5}{3} \quad \text{or} \quad m = -\frac{2}{5} \] **Solutions:** \[ m = -\frac{5}{3},\ -\frac{2}{5} \]

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Bonus Knowledge

To solve the equation \( 15 m(m+3) = 14 m - 10 \), we first rearrange it into standard form: \[ 15 m(m+3) - 14 m + 10 = 0. \] Expanding and simplifying, we get: \[ 15m^2 + 45m - 14m + 10 = 0, \] \[ 15m^2 + 31m + 10 = 0. \] Now, we can apply the quadratic formula \( m = \frac{-b \pm \sqrt{b^2 - 4ac}}{2a} \) where \( a = 15, b = 31, c = 10 \). Calculating the discriminant: \[ b^2 - 4ac = 31^2 - 4 \cdot 15 \cdot 10 = 961 - 600 = 361. \] Now, substituting into the quadratic formula: \[ m = \frac{-31 \pm \sqrt{361}}{30} = \frac{-31 \pm 19}{30}. \] This gives us two potential solutions: 1. \( m = \frac{-31 + 19}{30} = \frac{-12}{30} = -\frac{2}{5} \), 2. \( m = \frac{-31 - 19}{30} = \frac{-50}{30} = -\frac{5}{3} \). Thus, the solutions to the equation are: \(-\frac{2}{5}, -\frac{5}{3}\).

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