Question

√2x + 7 = √5x -8

Answer 1

\[\sqrt{2x} - \sqrt{5x} = -15\]
\[2x - 2\sqrt{10x^{2}} + 5x = -15\]
\[7x - 2\sqrt{10}x = -15\]
\[x(7 - 2\sqrt{10}) = -15\]
\[x = -15/(7 - 2\sqrt{10})\]

Answer 2

**Correction: That negative 15 should have been squared too. So it's 225 over (7 - 2sqrt(10).

Answer 3

hmm

Answer 4

x=5

Answer 5

try to substitute