Quadratic Equation

Rooting for you

100

Find x: x²=4

{-4,4}

200

Find x: x²=49

{-7,7}

300

Find x: x²=81

{-9,9}

Perfect for you

100

Find x: x²+2x+1=0

-1

200

Find x: x²+4x+4=0

-2

300

Find x: x²+12x+36=0

-6

x factor

100

Find x: (x+2)(x+2)=0

{-2}

200

Find x: (x-6)(x+1)=0

{-1,6}

300

Find x: (x-6)(x-7)=0

{6,7}

Anything under the sun

100

Riddle: 

What hands cannot clap?

Clock

200

3 + 3 x 3 - 3 + 3 =

12

300

I am a 2 digit number.  My ones digit is half of 16. My tens digit is half of the ones digit.

48