# Test: Factorisation I - Normal

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Question 1:   Factorise: $2a+2$
$a$
$2\left(a+1\right)$
$2a+1$
$4a$
Question 2:   Factorise: $4b+12$
$16b$
$8b$
$3\left(b+4\right)$
 $4\left(b+3\right)$
Question 3:   Factorise: $3x+9y$
$3\left(3y+x\right)$
$12\left(x+y\right)$
$12xy$
$3\left(x+y\right)$
Question 4:   Factorise: $5a+15ab$
$3a\left(5b+1\right)$
$3{a}^{2}b$
$20{a}^{2}b$
$5a\left(3b+1\right)$
Question 5:   Factorise: $3{a}^{2}+4a$
$7{a}^{2}+a$
$a\left(3a+4\right)$
$a\left(7a+1\right)$
$7{a}^{3}$
Question 6:   Factorise: $12{a}^{2}+144a$
$156{a}^{3}$
$8a\left(a+18\right)$
$12a\left(a+12\right)$
$a\left(12a+144\right)$
Question 7:   Factorise: $7{x}^{3}+14{x}^{2}$
$14x\left(x+1\right)$
$7{x}^{2}\left(x+2\right)$
$x\left(7x+2\right)$
$21{x}^{5}$
Question 8:   Factorise: $3{a}^{3}{b}^{2}+6{a}^{2}b+12ab$
$21{a}^{6}{b}^{4}$
$3{a}^{2}b\left(ab+4a+2\right)$
$ab\left(3{a}^{2}b+6a+12\right)$
$3ab\left({a}^{2}b+2a+4\right)$
Question 9:   Factorise: $4x+12z-32y$
$3\left(x+4z-9y\right)$
$4\left(x+3z-8y\right)$
$6\left(2z-6y+x\right)$
$4\left(x+4z-8y\right)$
Question 10:   Factorise: ${x}^{2}+3x+2$
$\left(x+1\right)\left(x-1\right)$
Cannot be factored
$\left(x+1\right)\left(x+2\right)$
$5x\left(x+1\right)$