exam Maths Puzzle Numerical Ability

Can you help me solve (3+ square root of 2)+(5 square root of 2 + square root of -2)step-by-step please?

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exam Other Question

PLease help me solve these 4 linear equations

x-4<-6

x+12<-5x

2x+3>x-1

7-5x<22 If a sequence contains the terms tn=-2n^2-5n+10,what is the value of t25? I got 2385 can someone please explain?