book Maths Puzzle Numerical Ability

The polynomial f(x) divided x – 3 results in a quotient of x2 + 3x – 5
with a remainder of 2. Find f(3).

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book Other Question

Dr. Z covered 310 miles by traveling for 4 hours at one speed and then for 5 hours at another speed. had she gone 5 hours at the first speed and 4 hours at the second speed, she wo (3x+7x5+7)+(5x5+5+7x)