Factorization

Hong Kong

Stage 1 - Stage 3

Factorise the following expression by taking out the common factor: $3p\left(3q-r+s\right)+20t\left(3q-r+s\right)$3`p`(3`q`−`r`+`s`)+20`t`(3`q`−`r`+`s`)

Easy

Less than a minute

Factorise the following expression:

$pqr-p^2q^2r^2-p^3q^3r^3$`p``q``r`−`p`2`q`2`r`2−`p`3`q`3`r`3

Factor $3x^2\left(5x-3\right)+x^3\times5$3`x`2(5`x`−3)+`x`3×5.

Factorise the expression $2\left(x+9\right)\left(x-5\right)^3+3\left(x+9\right)^2\left(x-5\right)^2$2(`x`+9)(`x`−5)3+3(`x`+9)2(`x`−5)2.

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