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Practice Problems

Let's substitute ‍$$j = 2$$ and ‍$$k = 6$$ into the expression.
- $$3+jk+k^3$$
- $$=3+(2)(6) + 6^3$$
- $$=3+12+216$$
- $$=231$$
Let's substitute ‍$$r = 6$$ and ‍$$s = 5$$ into the expression.
- $$8r - rs$$
- $$=8(6) - (6)(5)$$
- $$=48-30$$
- $$=18$$
Let's substitute ‍$$p = 7$$, $$m = 8$$ and ‍$$n = 2$$ into the expression.
- ‍$$8 - \frac{m}{n} + p^2$$
- ‍$$=8 - \frac{8}{2} + 7^2$$
- $$=8 - 4 + 49$$
- $$=53$$
Let's substitute ‍$$g = 3$$ and ‍$$h = 6$$ into the expression.
- $$\frac{9}{g} +2h +5$$
- ‍$$=\frac{9}{3} +2(6) +5$$
- $$=3+12+5$$
- $$=20$$

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