exam Maths Puzzle Numerical Ability

when solving 5x-27=13, first__? to each side, then?_ on both sides.

Read Solution (Total 0)

exam Other Question

ax^2-(2a+1)x+(a+1)=0
Then the product x1x2 is equal to:

I know I have to use the quadratic formula: x=-b+-sqrt of b^2-4ac/2a

Ahhhh this is a hard one The value of a computer after t years is given by the depreciation function V(t) = $2000 - 150t. What is the value of the computer 3 years after it is purchased?