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Perfect Squares
Not So Perfect Squares
Solve this.
Solve this, but harder.
Surprise?
100

sqrt81

9

100

sqrt20

2sqrt5

100

x^2=25

x=+-5

100

x^2+8=89

x=+-9

100

Can you solve this using square roots?

x^2-22x+40=0

No, because there is an "x" term.

200

sqrt144

+-12

200

sqrt80

4sqrt5

200

x^2=81

x=+-9

200

x^2-14=50

x=+-8

200

5x^2=-100

no solution

300

sqrt225

15

+-15

300

sqrt350

5sqrt14

300

x^2=121

x=+-11

300

3x^2+9=309

x=+-10

300

3x^2-18=-18

x=0

400

sqrt441

+-21

400

sqrt243

9sqrt3

400

x^2=289

x=+-17

400

25x^2=121

x=+-11/5

400

x^2/4+16=32

x=+-8

500

sqrt40000

200

500

sqrt288

12sqrt2

500

x^2=576

x=+-24

500

2(x^2-6)=132

x=+-6sqrt2

500

(5(x^2-3))/9=10

x=+-sqrt21