2.1 Exercises

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Övning 2.1:1

Utveckla

a) \displaystyle 3x(x-1) b) \displaystyle (1+x-x^2)xy c) \displaystyle -x^2(4-y^2)
d) \displaystyle x^3y^2\left(\displaystyle \frac{1}{y} - \frac{1}{xy}+1\right) e) \displaystyle (x-7)^2 f) \displaystyle (5+4y)^2
g) \displaystyle (y^2-3x^3)^2 h) \displaystyle (5x^3+3x^5)^2