Factorisation

Hong Kong

Stage 4 - Stage 5

Factorise $10x+50$10`x`+50.

Easy

Less than a minute

Factorise $k^2-81$`k`2−81.

Factorise $3x+xz-39y-13yz$3`x`+`x``z`−39`y`−13`y``z`.

Factorise $x^2+12x+36$`x`2+12`x`+36.

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