Quadratic Equations - Basic Factorisation
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1) Solve the following
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a) b(b − 11) = 0
b) c(7 + c) = 0
c) (z + 9)(z + 4) = 0
d) (2c + 9)(c − 6) = 0
2) Solve the following by factorisation
a) z 2 + 10z = 0
b) 5y 2 = −25y
c) z 2 + 15z + 54 = 0
d) a2 + 2a − 48 = 0
e) x 2 − 13x + 40 = 0
f) c 2 − 5c − 6 = 0
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Solutions for the assessment Quadratic Equations - Basic Factorisation
1) a) b = 11 or b = 0
b) c = −7 or c = 0
9
c) z = −9 or z = −4
d) c = − 2 or c = 6
2) a) z = 0 or z = −10
b) y = 0 or y = −5
c) z = −9 or z = −6
d) a = −8 or a = 6
e) x = 5 or x = 8
f) c = 6 or c = −1
Copyright Mathster.com 2016. Licensed to Thornleigh Salesian College, Bolton