exam Maths Puzzle Numerical Ability

Solve each of the equations for x.
2(x - 5)^2 = 3

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exam Other Question

I need help trying to work 2 problems #36 on page 623 which is 3/2-k - 5/k + 6/k^-2k and problem #40 same page which is 2/square root of 7-square root of 7. Thanks for the help. Solve: 5-3/4(3x-1)=5/8(3-2x)for x