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a1. 1-2*(-5)help! can someone solve Q 18 b? plz S10 http://www.xtremepapers.com/papers/CIE/Cambridge IGCSE/Mathematics (0580)/0580_s10_qp_22.pdf
11
2. 3x(1-2x)-2
simplyfy normally
b. use calculator
x^2-5x-11=0