exam Maths Puzzle Numerical Ability

Multiply as indicated. Please help!

(1 + sqrt2)^2

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exam Other Question

Factor the polymomial completely. If a ploynomial is prime say so.
9bn^3+15bn^2-14bn Jerry needs to raise his batting avg. So far he has 20 hits in 100 times at bat for .200 batting avg. How many consecutive hits does he need in order to raise his avg to at least .250? Solve. Write an equation