(a) Express x +4x+7 in the form (x+ p) +q , where p and q are integers.

(x + 2)2+3

DS
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Three forces of magnitude 50N, PN, QN all act in a horizontal plane in equilibrium. The diagram shows the forces. DIAGRAM: QN = EAST, 50 = SOUTH, PN = 120 DEGREES ANTICLOCKWISE FROM QN a) Find P. b) Find Q.


Let f(x)=x^3 - 2x^2 + 5. For which value(s) of x does f(x)=5?


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