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Algebra revision for a test on the basics for KS3 Year 9 Flashcards | StudBud

Explore/Algebra revision for a test on the basics for KS3 Year 9

Algebra revision for a test on the basics for KS3 Year 9

8 terms·StudBud Administration·15 plays

KS3 Algebra Revision #maths #ks3

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Questions 8

Answers

1
Factorise 3x² + 12x³
3x(x + 4x3)
3(x + 4x3)
3x2(1 + 4x)
3x(x+4x2)
2
Make x the subject of the following x² + 6 = y + 3
x2 = y - 3
x=√y - 3
x=√(y + 9)
x=√(y-3)
3
Factorise x² - 10x + 16
(x + 4)(x - 4)
(x + 8)(x - 2)
(x - 8)(x - 2)
(x + 8)(x + 2)
4
Expand (3x + 4)(x - 5)
3x2 - 11x - 20
3x2 - 9x - 20
3x2 + 9x -20
3x2-20
5
Factorise x² + 5x + 6
(x - 3)(x + 2)
(x + 3)(x + 2)
(x + 4)(x + 1)
(x + 6)(x + 1)
6
Make a the subject of the following a(b + 2c) = d - 4
a = d-4-2c
a = (d + 4)/(b - 2c)
a = (d - 4)/(b - 2c)
a = (d-4)/(b+2c)
7
Factorise x² + x - 20
(x + 10)(x - 2)
(x - 5)(x + 4)
(x + 5)(x - 4)
(x - 4)(x - 5)
8
Make g the subject of the following: ag = f - 4g
g = f/(a+4)
g = (f - 4)/a
g = f/(a-4)
g = (f - 4g)/a