1. Expand and simplify the following expressions: ‘
(a) (4x + y)2 −3x(y + 2x) (1 mark)
(x4y0z6)1 2 ×(x−3 2 y
6 2 )−2 ×x4y2z3 x−4yz3
2. Find the values of x in the following equation using the rule that if a×b = 0 then a = 0 or b = 0. Do not expand the equation or use the quadratic formula.
(5x + 6)(3x−
) = 0
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