Answer 5.1:2

From Förberedande kurs i matematik 1

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a) <math>3\times 4\pm 4</math>
b) <math>4x^2-\sqrt{x}</math>
c) <math>4\times 3^n\ge n^3</math>
d) <math>3-(5-2)=-(-3+5-2)</math>