exam Maths Puzzle Numerical Ability

In England, sons of members of the Labor Party vote Labor with probability 0.5, vote Conservative with probability 0.4, and vote Liberal with probability 0.1. The probabilities fo

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exam Other Question
Solve:
a) 25(^2x+1)-5=120
b)sqrt2x^2-sqrt2=0
c)2^x=sqrt32
d) -8^0+(-2/5)^-2 Please help me to solve this problem

Perform the operations as indicated

sq rt -108 + sq rt -75


Thanks