ADM-04 · Advanced Math

Solve a quadratic equation

Quadratics and polynomials · Stage 2

01 · Key idea

Set a quadratic equal to zero and factor or use another valid method.

Useful ruleax²+bx+c=0

Build on: ADM-02

02 · Worked example

Solve x² − 5x + 6 = 0.

This teaching example is original and is not an official SAT question.

Reasoning

(x−2)(x−3)=0, so either factor can be zero.

Answer

x = 2 or x = 3

03 · Next step

Practice questions remain in English, as on the SAT.

ADM-04 · Solve a quadratic equation