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2026‑01‑08 1) Solve: w² - w³ = 12
2026‑01‑08 2) Solve y in Terms of x from an Exponential Equation
2026‑01‑08 3) Finding the Indefinite Integral
2026‑01‑08 4) Factorizing 12x² + 25x − 22
2026‑01‑08 5) Solving a Logarithmic Equation
2026‑01‑08 6) Solving a Linear System Using Substitution
2026‑05‑17 7) Solving Tangent from a Sin-Cos Sum
2026‑05‑24 8) Evaluating the Square Root of the Sum of Three Cubes
2026‑05‑31 9) Solving a Cubic-Quadratic Difference
2026‑06‑07 10) Sum of Root i and Root -i: Solution 1
2026‑06‑14 11) Sum of Root i and Root -i: Solution 2
2026‑06‑21 12) Evaluating a Radical Expression
2026‑06‑28 13) Sum of Root i and Root -i: False Ambiguity
2026‑07‑05 14) Sum of Root i and Root -i: Solution 3 - Polar Form Solution
2026‑07‑12 15) Root of (21⁷ - 21⁶) With No Calculator
2026‑07‑19 16) Root (a) + Root (b) Equals 10. Root (ab) Equals 10. Find a & b
2026‑07‑26 17) Derivation of the Finite Geometric Series Formula
2026‑08‑01 18) Quadratic Formula Proof
2026‑08‑09 19) Solving a Cubic Equation Without a Calculator
2026‑08‑16 20) Trigonometric Sum Problem. To Find tan x
2026‑08‑23 21) Solve (64³-16⁴) With No Calculator
2026‑09‑06 22) Solving a Quartic Polynomial

Solving a Quartic Polynomial

Post 22 | Date: 2026‑09‑06

Problem:

\[ (x-3)(x+5)(x-7)(x+9)=385 \]

SOLUTION:

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