## anonymous 4 years ago 2w+3squareroot of w=14

1. anonymous

$2w+3\sqrt{w}=14$

2. anonymous

solve by substitution

3. anonymous

w= 4 Don't know how to solve it by substitution

4. anonymous

i got 4 also

5. anonymous

what did you use?

6. anonymous

i got w=4 and w = -7/2

7. anonymous

Just looked at the problem & guessed, then checked my math.

8. anonymous

lol wtf, good guess

9. anonymous

well, if you look at it, you know odds are w has to be a number that has an integer square root. And it has to be pretty low. So, 4 was the first number that came to mind, because 9 is the next square, and it's already too high.