MATH SOLVE

4 months ago

Q:
# A student concluded that the solution to the equation sqrt2x+1 +3=0 is x=4. Do you agree? Why or why not?

Accepted Solution

A:

Just put 4 as x in the equation and solve it. The new equation is:sqrt(2*4)+1+3 = 0Now we can solve it. sqrt(2*4) becomes sqrt8:sqrt8+1+3=0. -------> sqrt8+4=0The sqrt of 8 is about 2.83.. so 2.83+4 is:6.83So we have 6.83 as the answerbut 6.83 does not equal 0 so x cannot equal 4