Year 8 quiz student created

7zy (3z + 4y)

• 21zy + 28zy
• 21zy^2 + 28y
• 21z^2 y + 28 zy^2
• 10 z^2 y + 11 zy^2
• 21z^2 y + 4zy^2

Simplify fully: 2a - 5b + 3a^2

• -a^2 + 5b
• 2b - 5a + 3b^2
• -2ab^2
• Already fully simplified.
• None of the above.

Factorise Completely : 32x^3 - 16x

• 8x(4x^2 - 2)
• 16x(2x^2 - 1)
• 16x(2x - 1)
• 4x(8x^2 - 4)
• 16(2x^3 - x)

-1((y^-3)^-4)^-2/-y^-24

• -1.0
• y^-24
• 1.0
• y
• -y

: ) Factorise fully 56y^2 - 16y

• No Factorisation Impossible
• 8y(7y + 2)
• 8y(7y^2 - 2)
• 8y(7y - 2)
• 7y(8y - 2)

Factorise fully: 3x-21x^2

• 3(x+7x^2)
• 3x(1-7x)
• x(3-21x)
• x^2(1+7x)
• this is non-factorable.

144xy+108xy²

• 12xy(12+9y)
• 36xy(4+3y)
• 12xy(4+3)
• 14x(15y+13y)
• 14xy(14+11xy)

12(x^4 - 7y) - 5(12x^3-16y)

• 12x^4 - 60x^3 + 164y
• -12X^4 + 60x^3 - 4y
• 12x^4 - 60^3 - 164y
• 12x^4 - 60x^3 - 4y
• 12^4 - 60x^3 + 4y

7(12x+1)+(7+x)(7+2) Round To Nearest Negative Number Number

• -1.0
• -12.0
• -2.0
• 1.0
• -8.0

-12x(x-2)

• -12x^2 + 24
• 12x^2 + 24
• -12x + 24
• -12x^2 - 24
• 12x - 24