Stage 11 · Quadratic Equations

11.4.3 Factoring by the Cross Method

11.4 Factoring and Choosing Your Method

Point 3 of 4

Core idea

Split x²+bx+c into (x+p)(x+q) by finding two numbers that multiply to c and add to b, pairing them up with a little cross diagram.

Module goal. Master the quickest method — factoring — and learn to pick the least-effort approach among the three.

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