16
12. (a)
Examiner
only
Expand and simplify (3x –2)(5x + 7).
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[2]
(b)
Factorise the expression 121d 2 – 25.
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[2]
(c)
Factorise the expression 20y 2 + 7y – 6 and hence solve the equation 20y 2 + 7y – 6 = 0.
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[3]
(d)
Express x 2 + 14x + 47 in the form (x + a)2 + b where a and b are values to be found.
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[2]
(4363-02)