book Maths Puzzle Numerical Ability

1) The expression x5 means,....
2) Inthe expression xn, n is called the,... and x is called the,....

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book Other Question

how do you identify funktions?



can you show me how to do this problem

the rule: evaluate the function f(x)=3x-10 for the given value of the variable.
x=-2
can you show me how to do it please!!!
Quadratic Equations:

3x^2 + 2x -8 = 0 and 5x^2 + 7x = 12

I can't seem to get these worked out! Any help is appreciated!