book Maths Puzzle Numerical Ability

Find two factors of 28 with a sum of 11

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book Other Question

Could someone help me with this one also please?
Solve for x without using decimals:

(2x + 3)^2 - (x - 2)^2 = 3 Please help with this. Thanks a bunch

4) For a fixed rate, a fixed principal amount, and a fixed compounding cycle, the return is an exponential function of time. Using the for