Example

Solving 3c2=10c83c^2 = 10c - 8 by Factoring

Solve the quadratic equation 3c2=10c83c^2 = 10c - 8 by applying the factoring method.

Step 1 — Write in standard form. Subtract 10c10c and add 88 to both sides: 3c210c+8=03c^2 - 10c + 8 = 0

Step 2 — Factor the quadratic expression. (3c4)(c2)=0(3c - 4)(c - 2) = 0

Step 3 — Apply the Zero Product Property. Set each factor equal to zero: 3c4=0orc2=03c - 4 = 0 \quad \text{or} \quad c - 2 = 0

Step 4 — Solve each linear equation: c=43orc=2c = \frac{4}{3} \quad \text{or} \quad c = 2

Step 5 — Check both solutions by substituting into the original equation 3c2=10c83c^2 = 10c - 8: For c=43c = \frac{4}{3}: 3(43)2=3(169)=1633\left(\frac{4}{3}\right)^2 = 3\left(\frac{16}{9}\right) = \frac{16}{3} and 10(43)8=403243=16310\left(\frac{4}{3}\right) - 8 = \frac{40}{3} - \frac{24}{3} = \frac{16}{3} ✓ For c=2c = 2: 3(2)2=123(2)^2 = 12 and 10(2)8=208=1210(2) - 8 = 20 - 8 = 12 ✓ The solutions are c=43c = \frac{4}{3} and c=2c = 2.

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Updated 2026-04-30

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