solve 4√(x+1)-x=4

need formula to solve 4√(x+1)-x=4
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1 Answer

Rearrange: 4√(x+1)=x+4,

Square: 16(x+1)=x2+8x+16,

16x+16=x2+8x+16,

x2-8x=0=x(x-8), so x=0 or 8.

CHECK

4√(0+1)-0=4; OK

4√9-8=12-8=4; OK

by Top Rated User (1.2m points)

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