The negative square root of 81

x - 4 = 10

he determined E = mc2

(8x^3 + 11x) + (14x^3 – 2x + 4)

If you take 3 apples from a group of 5, how many do you have?

15 squared

3x-7=20

he was so famous for his calculus, optics and laws of motion

(–8x^2 + 13) – (9 – 2x^2)

If you can purchase 8 eggs for 26 cents, how many can you buy for a cent and a quarter?

30 squared

2x+6=16

he discovered formulae for the volume and surface area of a sphere, and may even have been first to notice and prove the simple relationship between a circle's circumference and area.

(3x + 5) – (12x – 8) + (5x +2)

How many 9's are there between 1 and 100?

the negative square root of 361

105/x=7

he discovered the laws of inertia, falling bodies (including parabolic trajectories), and the pendulum; he also introduced the notion of relativity which Einstein later found so fruitful.

– (3x^3 + 2) + (5x^3 + 3x) – (3x^2 – 4)

If a rooster laid 13 eggs, and the farmer took 8 of them, and then another rooster laid 12 eggs and 4 of them were rotten, how many of the eggs were left?

the square root of 841

5x + 3x * 10 = 10x + 50

His observations of the planets with Brahe, along with his study of Apollonius' 1800-year old work, led to three his Laws of Planetary Motion, which in turn led directly to Newton's Laws of Motion.

(4x + 5x^2 – 2) – (x2 + x – 3)

f you have 6 black socks, 4 blue socks, 8 brown socks, and 2 red socks in your sock drawer,if you pull one of each out what is the minimum number of socks that you need to pull out to have a matching pair?