exam Maths Puzzle Numerical Ability

Could someone help me explain: why x times x is equal to x squared not 2x. Thank you

Read Solution (Total 0)

exam Other Question

4-(y-3) = x+3 1st equation


10+x = 2+(y-12)2nd equation
----
3
The population denisity D (in people per square mile) of a city is related to the distance x, in miles, from the center of the city by D = -45x^2 + 190x + 200, 0 < x<5. Describe th